How do I write thee? Let me count the ways

Caffeine for the Creative Mind book coverA recent posting to the CHMINF-L mailing list at the University of Indiana reiterates a point made by Steve Heller in his recent keynote address to the 2014 ICCS/GCC meeting in Noordwijkerhout. In that presentation, Steve argues for the need for chemical structure canonicalization by showing 172 possible valid SMILES strings for the molecule Caffeine.

The representational degeneracy of line notations, connection tables and even structure diagrams is one of the main challenges of cheminformatics. A chemist’s concept of sameness doesn’t always match the classical “bond order” representation/model of organic chemistry.  I’ll save a discussion of pros and cons of InChI vs SMILES for a future post, but for now we’ll investigate the core property that multiple SMILES map to a single InChI.

The original 172 SMILES for Caffeine were automatically generated by Ian Watson at Eli Lilly as described in his September 2010 CHMINF-L posting, but no claims were made as to whether this list is, or was intended to be, exhaustive.

A quick back-of-the-envelope calculation reveals that 172 is too low a bound for the number of possible SMILES permutations for Caffeine. SMILES generation resembles the depth-first traversal of an un-rooted undirected graph, potentially starting from any atom and making an arbitrary ordering decision at each branch point, i.e. each atom with more than two atom neighbours. Caffeine has 14 heavy atoms, two rings, 7 atoms with heavy atom degree three, and no symmetries.  This means that Caffeine should have at least 14*2^(7-2)=448 SMILES.  This calculation assumes that the SMILES string can start at any atom, and underestimates the branch points by subtracting the number of ring closures.

In fact, with a little programming magic (exercise left to the reader), it’s possible to come up with the following list of 4160 SMILES, all of which should canonicalize to the exact same form:

Cn1cnc2c1c(=O)n(c(=O)n2C)C
Cn1cnc2c1c(=O)n(c(n2C)=O)C
Cn1cnc2c1c(=O)n(C)c(=O)n2C
Cn1cnc2c1c(=O)n(C)c(n2C)=O
Cn1cnc2c1c(n(c(=O)n2C)C)=O
Cn1cnc2c1c(n(c(n2C)=O)C)=O
Cn1cnc2c1c(n(C)c(=O)n2C)=O
Cn1cnc2c1c(n(C)c(n2C)=O)=O
Cn1cnc2n(c(n(c(c12)=O)C)=O)C
Cn1cnc2n(c(n(c(c21)=O)C)=O)C
Cn1cnc2n(c(n(c(=O)c12)C)=O)C
Cn1cnc2n(c(n(c(=O)c21)C)=O)C
Cn1cnc2n(c(n(C)c(c12)=O)=O)C
Cn1cnc2n(c(n(C)c(c21)=O)=O)C
Cn1cnc2n(c(n(C)c(=O)c12)=O)C
Cn1cnc2n(c(n(C)c(=O)c21)=O)C
Cn1cnc2n(c(=O)n(c(c12)=O)C)C
Cn1cnc2n(c(=O)n(c(c21)=O)C)C
Cn1cnc2n(c(=O)n(c(=O)c12)C)C
Cn1cnc2n(c(=O)n(c(=O)c21)C)C
Cn1cnc2n(c(=O)n(C)c(c12)=O)C
Cn1cnc2n(c(=O)n(C)c(c21)=O)C
Cn1cnc2n(c(=O)n(C)c(=O)c12)C
Cn1cnc2n(c(=O)n(C)c(=O)c21)C
Cn1cnc2n(C)c(n(c(c12)=O)C)=O
Cn1cnc2n(C)c(n(c(c21)=O)C)=O
Cn1cnc2n(C)c(n(c(=O)c12)C)=O
Cn1cnc2n(C)c(n(c(=O)c21)C)=O
Cn1cnc2n(C)c(n(C)c(c12)=O)=O
Cn1cnc2n(C)c(n(C)c(c21)=O)=O
Cn1cnc2n(C)c(n(C)c(=O)c12)=O
Cn1cnc2n(C)c(n(C)c(=O)c21)=O
Cn1cnc2n(C)c(=O)n(c(c12)=O)C
Cn1cnc2n(C)c(=O)n(c(c21)=O)C
Cn1cnc2n(C)c(=O)n(c(=O)c12)C
Cn1cnc2n(C)c(=O)n(c(=O)c21)C
Cn1cnc2n(C)c(=O)n(C)c(c12)=O
Cn1cnc2n(C)c(=O)n(C)c(c21)=O
Cn1cnc2n(C)c(=O)n(C)c(=O)c12
Cn1cnc2n(C)c(=O)n(C)c(=O)c21
Cn1cnc(n2C)c1c(=O)n(c2=O)C
Cn1cnc(n2C)c1c(=O)n(C)c2=O
Cn1cnc(n2C)c1c(n(c2=O)C)=O
Cn1cnc(n2C)c1c(n(C)c2=O)=O
Cn1cnc(n(c2=O)C)c1c(=O)n2C
Cn1cnc(n(c2=O)C)c1c(n2C)=O
Cn1cnc(n(c(n2C)=O)C)c1c2=O
Cn1cnc(n(c(n(c2=O)C)=O)C)c12
Cn1cnc(n(c(n(c2=O)C)=O)C)c21
Cn1cnc(n(c(n(C)c2=O)=O)C)c12
Cn1cnc(n(c(n(C)c2=O)=O)C)c21
Cn1cnc(n(c(=O)n2C)C)c1c2=O
Cn1cnc(n(c(=O)n(c2=O)C)C)c12
Cn1cnc(n(c(=O)n(c2=O)C)C)c21
Cn1cnc(n(c(=O)n(C)c2=O)C)c12
Cn1cnc(n(c(=O)n(C)c2=O)C)c21
Cn1cnc(n(C)c2=O)c1c(=O)n2C
Cn1cnc(n(C)c2=O)c1c(n2C)=O
Cn1cnc(n(C)c(n2C)=O)c1c2=O
Cn1cnc(n(C)c(n(c2=O)C)=O)c12
Cn1cnc(n(C)c(n(c2=O)C)=O)c21
Cn1cnc(n(C)c(n(C)c2=O)=O)c12
Cn1cnc(n(C)c(n(C)c2=O)=O)c21
Cn1cnc(n(C)c(=O)n2C)c1c2=O
Cn1cnc(n(C)c(=O)n(c2=O)C)c12
Cn1cnc(n(C)c(=O)n(c2=O)C)c21
Cn1cnc(n(C)c(=O)n(C)c2=O)c12
Cn1cnc(n(C)c(=O)n(C)c2=O)c21
Cn1cnc(c1c2=O)n(c(n2C)=O)C
Cn1cnc(c1c2=O)n(c(=O)n2C)C
Cn1cnc(c1c2=O)n(C)c(n2C)=O
Cn1cnc(c1c2=O)n(C)c(=O)n2C
Cn1cnc(c1c(=O)n2C)n(c2=O)C
Cn1cnc(c1c(=O)n2C)n(C)c2=O
Cn1cnc(c1c(=O)n(c2=O)C)n2C
Cn1cnc(c1c(=O)n(C)c2=O)n2C
Cn1cnc(c1c(n2C)=O)n(c2=O)C
Cn1cnc(c1c(n2C)=O)n(C)c2=O
Cn1cnc(c1c(n(c2=O)C)=O)n2C
Cn1cnc(c1c(n(C)c2=O)=O)n2C
Cn1c2c(=O)n(c(=O)n(c2nc1)C)C
Cn1c2c(=O)n(c(=O)n(C)c2nc1)C
Cn1c2c(=O)n(c(n(c2nc1)C)=O)C
Cn1c2c(=O)n(c(n(C)c2nc1)=O)C
Cn1c2c(=O)n(C)c(=O)n(c2nc1)C
Cn1c2c(=O)n(C)c(=O)n(C)c2nc1
Cn1c2c(=O)n(C)c(n(c2nc1)C)=O
Cn1c2c(=O)n(C)c(n(C)c2nc1)=O
Cn1c2c(n(c(=O)n(c2nc1)C)C)=O
Cn1c2c(n(c(=O)n(C)c2nc1)C)=O
Cn1c2c(n(c(n(c2nc1)C)=O)C)=O
Cn1c2c(n(c(n(C)c2nc1)=O)C)=O
Cn1c2c(n(C)c(=O)n(c2nc1)C)=O
Cn1c2c(n(C)c(=O)n(C)c2nc1)=O
Cn1c2c(n(C)c(n(c2nc1)C)=O)=O
Cn1c2c(n(C)c(n(C)c2nc1)=O)=O
Cn1c2c(nc1)n(c(n(c2=O)C)=O)C
Cn1c2c(nc1)n(c(n(C)c2=O)=O)C
Cn1c2c(nc1)n(c(=O)n(c2=O)C)C
Cn1c2c(nc1)n(c(=O)n(C)c2=O)C
Cn1c2c(nc1)n(C)c(n(c2=O)C)=O
Cn1c2c(nc1)n(C)c(n(C)c2=O)=O
Cn1c2c(nc1)n(C)c(=O)n(c2=O)C
Cn1c2c(nc1)n(C)c(=O)n(C)c2=O
Cn1c2c(n(c(n(c2=O)C)=O)C)nc1
Cn1c2c(n(c(n(C)c2=O)=O)C)nc1
Cn1c2c(n(c(=O)n(c2=O)C)C)nc1
Cn1c2c(n(c(=O)n(C)c2=O)C)nc1
Cn1c2c(n(C)c(n(c2=O)C)=O)nc1
Cn1c2c(n(C)c(n(C)c2=O)=O)nc1
Cn1c2c(n(C)c(=O)n(c2=O)C)nc1
Cn1c2c(n(C)c(=O)n(C)c2=O)nc1
Cn1c(c2nc1)c(=O)n(c(=O)n2C)C
Cn1c(c2nc1)c(=O)n(c(n2C)=O)C
Cn1c(c2nc1)c(=O)n(C)c(=O)n2C
Cn1c(c2nc1)c(=O)n(C)c(n2C)=O
Cn1c(c2nc1)c(n(c(=O)n2C)C)=O
Cn1c(c2nc1)c(n(c(n2C)=O)C)=O
Cn1c(c2nc1)c(n(C)c(=O)n2C)=O
Cn1c(c2nc1)c(n(C)c(n2C)=O)=O
Cn1c(c(nc1)n2C)c(=O)n(c2=O)C
Cn1c(c(nc1)n2C)c(=O)n(C)c2=O
Cn1c(c(nc1)n2C)c(n(c2=O)C)=O
Cn1c(c(nc1)n2C)c(n(C)c2=O)=O
Cn1c(c(nc1)n(c2=O)C)c(=O)n2C
Cn1c(c(nc1)n(c2=O)C)c(n2C)=O
Cn1c(c(nc1)n(c(n2C)=O)C)c2=O
Cn1c(c(nc1)n(c(=O)n2C)C)c2=O
Cn1c(c(nc1)n(C)c2=O)c(=O)n2C
Cn1c(c(nc1)n(C)c2=O)c(n2C)=O
Cn1c(c(nc1)n(C)c(n2C)=O)c2=O
Cn1c(c(nc1)n(C)c(=O)n2C)c2=O
Cn1c(c(n2C)nc1)c(=O)n(c2=O)C
Cn1c(c(n2C)nc1)c(=O)n(C)c2=O
Cn1c(c(n2C)nc1)c(n(c2=O)C)=O
Cn1c(c(n2C)nc1)c(n(C)c2=O)=O
Cn1c(c(n(c2=O)C)nc1)c(=O)n2C
Cn1c(c(n(c2=O)C)nc1)c(n2C)=O
Cn1c(c(n(c(n2C)=O)C)nc1)c2=O
Cn1c(c(n(c(=O)n2C)C)nc1)c2=O
Cn1c(c(n(C)c2=O)nc1)c(=O)n2C
Cn1c(c(n(C)c2=O)nc1)c(n2C)=O
Cn1c(c(n(C)c(n2C)=O)nc1)c2=O
Cn1c(c(n(C)c(=O)n2C)nc1)c2=O
Cn1c(c2=O)c(nc1)n(c(n2C)=O)C
Cn1c(c2=O)c(nc1)n(c(=O)n2C)C
Cn1c(c2=O)c(nc1)n(C)c(n2C)=O
Cn1c(c2=O)c(nc1)n(C)c(=O)n2C
Cn1c(c2=O)c(n(c(n2C)=O)C)nc1
Cn1c(c2=O)c(n(c(=O)n2C)C)nc1
Cn1c(c2=O)c(n(C)c(n2C)=O)nc1
Cn1c(c2=O)c(n(C)c(=O)n2C)nc1
Cn1c(c(=O)n2C)c(nc1)n(c2=O)C
Cn1c(c(=O)n2C)c(nc1)n(C)c2=O
Cn1c(c(=O)n2C)c(n(c2=O)C)nc1
Cn1c(c(=O)n2C)c(n(C)c2=O)nc1
Cn1c(c(=O)n(c2=O)C)c(nc1)n2C
Cn1c(c(=O)n(c2=O)C)c(n2C)nc1
Cn1c(c(=O)n(c(=O)n2C)C)c2nc1
Cn1c(c(=O)n(c(n2C)=O)C)c2nc1
Cn1c(c(=O)n(C)c2=O)c(nc1)n2C
Cn1c(c(=O)n(C)c2=O)c(n2C)nc1
Cn1c(c(=O)n(C)c(=O)n2C)c2nc1
Cn1c(c(=O)n(C)c(n2C)=O)c2nc1
Cn1c(c(n2C)=O)c(nc1)n(c2=O)C
Cn1c(c(n2C)=O)c(nc1)n(C)c2=O
Cn1c(c(n2C)=O)c(n(c2=O)C)nc1
Cn1c(c(n2C)=O)c(n(C)c2=O)nc1
Cn1c(c(n(c2=O)C)=O)c(nc1)n2C
Cn1c(c(n(c2=O)C)=O)c(n2C)nc1
Cn1c(c(n(c(=O)n2C)C)=O)c2nc1
Cn1c(c(n(c(n2C)=O)C)=O)c2nc1
Cn1c(c(n(C)c2=O)=O)c(nc1)n2C
Cn1c(c(n(C)c2=O)=O)c(n2C)nc1
Cn1c(c(n(C)c(=O)n2C)=O)c2nc1
Cn1c(c(n(C)c(n2C)=O)=O)c2nc1
Cn(c1c2=O)cnc1n(c(n2C)=O)C
Cn(c1c2=O)cnc1n(c(=O)n2C)C
Cn(c1c2=O)cnc1n(C)c(n2C)=O
Cn(c1c2=O)cnc1n(C)c(=O)n2C
Cn(c1c(=O)n2C)cnc1n(c2=O)C
Cn(c1c(=O)n2C)cnc1n(C)c2=O
Cn(c1c(=O)n(c2=O)C)cnc1n2C
Cn(c1c(=O)n(c(=O)n2C)C)cnc21
Cn(c1c(=O)n(c(=O)n2C)C)cnc12
Cn(c1c(=O)n(c(n2C)=O)C)cnc21
Cn(c1c(=O)n(c(n2C)=O)C)cnc12
Cn(c1c(=O)n(C)c2=O)cnc1n2C
Cn(c1c(=O)n(C)c(=O)n2C)cnc21
Cn(c1c(=O)n(C)c(=O)n2C)cnc12
Cn(c1c(=O)n(C)c(n2C)=O)cnc21
Cn(c1c(=O)n(C)c(n2C)=O)cnc12
Cn(c1c(n2C)=O)cnc1n(c2=O)C
Cn(c1c(n2C)=O)cnc1n(C)c2=O
Cn(c1c(n(c2=O)C)=O)cnc1n2C
Cn(c1c(n(c(=O)n2C)C)=O)cnc21
Cn(c1c(n(c(=O)n2C)C)=O)cnc12
Cn(c1c(n(c(n2C)=O)C)=O)cnc21
Cn(c1c(n(c(n2C)=O)C)=O)cnc12
Cn(c1c(n(C)c2=O)=O)cnc1n2C
Cn(c1c(n(C)c(=O)n2C)=O)cnc21
Cn(c1c(n(C)c(=O)n2C)=O)cnc12
Cn(c1c(n(C)c(n2C)=O)=O)cnc21
Cn(c1c(n(C)c(n2C)=O)=O)cnc12
Cn(c1c2n(c(n(c1=O)C)=O)C)cn2
Cn(c1c2n(c(n(C)c1=O)=O)C)cn2
Cn(c1c2n(c(=O)n(c1=O)C)C)cn2
Cn(c1c2n(c(=O)n(C)c1=O)C)cn2
Cn(c1c2n(C)c(n(c1=O)C)=O)cn2
Cn(c1c2n(C)c(n(C)c1=O)=O)cn2
Cn(c1c2n(C)c(=O)n(c1=O)C)cn2
Cn(c1c2n(C)c(=O)n(C)c1=O)cn2
Cn(c(c1n2C)c(=O)n(c2=O)C)cn1
Cn(c(c1n2C)c(=O)n(C)c2=O)cn1
Cn(c(c1n2C)c(n(c2=O)C)=O)cn1
Cn(c(c1n2C)c(n(C)c2=O)=O)cn1
Cn(c(c1n(c2=O)C)c(=O)n2C)cn1
Cn(c(c1n(c2=O)C)c(n2C)=O)cn1
Cn(c(c1n(c(n2C)=O)C)c2=O)cn1
Cn(c(c1n(c(=O)n2C)C)c2=O)cn1
Cn(c(c1n(C)c2=O)c(=O)n2C)cn1
Cn(c(c1n(C)c2=O)c(n2C)=O)cn1
Cn(c(c1n(C)c(n2C)=O)c2=O)cn1
Cn(c(c1n(C)c(=O)n2C)c2=O)cn1
Cn(c(c1=O)c2n(c(n1C)=O)C)cn2
Cn(c(c1=O)c2n(c(=O)n1C)C)cn2
Cn(c(c1=O)c2n(C)c(n1C)=O)cn2
Cn(c(c1=O)c2n(C)c(=O)n1C)cn2
Cn(c(c(=O)n1C)c2n(c1=O)C)cn2
Cn(c(c(=O)n1C)c2n(C)c1=O)cn2
Cn(c(c(=O)n(c1=O)C)c2n1C)cn2
Cn(c(c(=O)n(C)c1=O)c2n1C)cn2
Cn(c(c(n1C)=O)c2n(c1=O)C)cn2
Cn(c(c(n1C)=O)c2n(C)c1=O)cn2
Cn(c(c(n(c1=O)C)=O)c2n1C)cn2
Cn(c(c(n(C)c1=O)=O)c2n1C)cn2
Cn(cnc1n2C)c1c(=O)n(c2=O)C
Cn(cnc1n2C)c1c(=O)n(C)c2=O
Cn(cnc1n2C)c1c(n(c2=O)C)=O
Cn(cnc1n2C)c1c(n(C)c2=O)=O
Cn(cnc1n(c2=O)C)c1c(=O)n2C
Cn(cnc1n(c2=O)C)c1c(n2C)=O
Cn(cnc1n(c(n2C)=O)C)c1c2=O
Cn(cnc1n(c(n(c2=O)C)=O)C)c12
Cn(cnc1n(c(n(c2=O)C)=O)C)c21
Cn(cnc1n(c(n(C)c2=O)=O)C)c12
Cn(cnc1n(c(n(C)c2=O)=O)C)c21
Cn(cnc1n(c(=O)n2C)C)c1c2=O
Cn(cnc1n(c(=O)n(c2=O)C)C)c12
Cn(cnc1n(c(=O)n(c2=O)C)C)c21
Cn(cnc1n(c(=O)n(C)c2=O)C)c12
Cn(cnc1n(c(=O)n(C)c2=O)C)c21
Cn(cnc1n(C)c2=O)c1c(=O)n2C
Cn(cnc1n(C)c2=O)c1c(n2C)=O
Cn(cnc1n(C)c(n2C)=O)c1c2=O
Cn(cnc1n(C)c(n(c2=O)C)=O)c12
Cn(cnc1n(C)c(n(c2=O)C)=O)c21
Cn(cnc1n(C)c(n(C)c2=O)=O)c12
Cn(cnc1n(C)c(n(C)c2=O)=O)c21
Cn(cnc1n(C)c(=O)n2C)c1c2=O
Cn(cnc1n(C)c(=O)n(c2=O)C)c12
Cn(cnc1n(C)c(=O)n(c2=O)C)c21
Cn(cnc1n(C)c(=O)n(C)c2=O)c12
Cn(cnc1n(C)c(=O)n(C)c2=O)c21
n1(C)cnc2c1c(=O)n(c(=O)n2C)C
n1(C)cnc2c1c(=O)n(c(n2C)=O)C
n1(C)cnc2c1c(=O)n(C)c(=O)n2C
n1(C)cnc2c1c(=O)n(C)c(n2C)=O
n1(C)cnc2c1c(n(c(=O)n2C)C)=O
n1(C)cnc2c1c(n(c(n2C)=O)C)=O
n1(C)cnc2c1c(n(C)c(=O)n2C)=O
n1(C)cnc2c1c(n(C)c(n2C)=O)=O
n1(C)cnc2n(c(n(c(c12)=O)C)=O)C
n1(C)cnc2n(c(n(c(c21)=O)C)=O)C
n1(C)cnc2n(c(n(c(=O)c12)C)=O)C
n1(C)cnc2n(c(n(c(=O)c21)C)=O)C
n1(C)cnc2n(c(n(C)c(c12)=O)=O)C
n1(C)cnc2n(c(n(C)c(c21)=O)=O)C
n1(C)cnc2n(c(n(C)c(=O)c12)=O)C
n1(C)cnc2n(c(n(C)c(=O)c21)=O)C
n1(C)cnc2n(c(=O)n(c(c12)=O)C)C
n1(C)cnc2n(c(=O)n(c(c21)=O)C)C
n1(C)cnc2n(c(=O)n(c(=O)c12)C)C
n1(C)cnc2n(c(=O)n(c(=O)c21)C)C
n1(C)cnc2n(c(=O)n(C)c(c12)=O)C
n1(C)cnc2n(c(=O)n(C)c(c21)=O)C
n1(C)cnc2n(c(=O)n(C)c(=O)c12)C
n1(C)cnc2n(c(=O)n(C)c(=O)c21)C
n1(C)cnc2n(C)c(n(c(c12)=O)C)=O
n1(C)cnc2n(C)c(n(c(c21)=O)C)=O
n1(C)cnc2n(C)c(n(c(=O)c12)C)=O
n1(C)cnc2n(C)c(n(c(=O)c21)C)=O
n1(C)cnc2n(C)c(n(C)c(c12)=O)=O
n1(C)cnc2n(C)c(n(C)c(c21)=O)=O
n1(C)cnc2n(C)c(n(C)c(=O)c12)=O
n1(C)cnc2n(C)c(n(C)c(=O)c21)=O
n1(C)cnc2n(C)c(=O)n(c(c12)=O)C
n1(C)cnc2n(C)c(=O)n(c(c21)=O)C
n1(C)cnc2n(C)c(=O)n(c(=O)c12)C
n1(C)cnc2n(C)c(=O)n(c(=O)c21)C
n1(C)cnc2n(C)c(=O)n(C)c(c12)=O
n1(C)cnc2n(C)c(=O)n(C)c(c21)=O
n1(C)cnc2n(C)c(=O)n(C)c(=O)c12
n1(C)cnc2n(C)c(=O)n(C)c(=O)c21
n1(C)cnc(n2C)c1c(=O)n(c2=O)C
n1(C)cnc(n2C)c1c(=O)n(C)c2=O
n1(C)cnc(n2C)c1c(n(c2=O)C)=O
n1(C)cnc(n2C)c1c(n(C)c2=O)=O
n1(C)cnc(n(c2=O)C)c1c(=O)n2C
n1(C)cnc(n(c2=O)C)c1c(n2C)=O
n1(C)cnc(n(c(n2C)=O)C)c1c2=O
n1(C)cnc(n(c(n(c2=O)C)=O)C)c12
n1(C)cnc(n(c(n(c2=O)C)=O)C)c21
n1(C)cnc(n(c(n(C)c2=O)=O)C)c12
n1(C)cnc(n(c(n(C)c2=O)=O)C)c21
n1(C)cnc(n(c(=O)n2C)C)c1c2=O
n1(C)cnc(n(c(=O)n(c2=O)C)C)c12
n1(C)cnc(n(c(=O)n(c2=O)C)C)c21
n1(C)cnc(n(c(=O)n(C)c2=O)C)c12
n1(C)cnc(n(c(=O)n(C)c2=O)C)c21
n1(C)cnc(n(C)c2=O)c1c(=O)n2C
n1(C)cnc(n(C)c2=O)c1c(n2C)=O
n1(C)cnc(n(C)c(n2C)=O)c1c2=O
n1(C)cnc(n(C)c(n(c2=O)C)=O)c12
n1(C)cnc(n(C)c(n(c2=O)C)=O)c21
n1(C)cnc(n(C)c(n(C)c2=O)=O)c12
n1(C)cnc(n(C)c(n(C)c2=O)=O)c21
n1(C)cnc(n(C)c(=O)n2C)c1c2=O
n1(C)cnc(n(C)c(=O)n(c2=O)C)c12
n1(C)cnc(n(C)c(=O)n(c2=O)C)c21
n1(C)cnc(n(C)c(=O)n(C)c2=O)c12
n1(C)cnc(n(C)c(=O)n(C)c2=O)c21
n1(C)cnc(c1c2=O)n(c(n2C)=O)C
n1(C)cnc(c1c2=O)n(c(=O)n2C)C
n1(C)cnc(c1c2=O)n(C)c(n2C)=O
n1(C)cnc(c1c2=O)n(C)c(=O)n2C
n1(C)cnc(c1c(=O)n2C)n(c2=O)C
n1(C)cnc(c1c(=O)n2C)n(C)c2=O
n1(C)cnc(c1c(=O)n(c2=O)C)n2C
n1(C)cnc(c1c(=O)n(C)c2=O)n2C
n1(C)cnc(c1c(n2C)=O)n(c2=O)C
n1(C)cnc(c1c(n2C)=O)n(C)c2=O
n1(C)cnc(c1c(n(c2=O)C)=O)n2C
n1(C)cnc(c1c(n(C)c2=O)=O)n2C
n1(cnc2c1c(=O)n(c(=O)n2C)C)C
n1(cnc2c1c(=O)n(c(n2C)=O)C)C
n1(cnc2c1c(=O)n(C)c(=O)n2C)C
n1(cnc2c1c(=O)n(C)c(n2C)=O)C
n1(cnc2c1c(n(c(=O)n2C)C)=O)C
n1(cnc2c1c(n(c(n2C)=O)C)=O)C
n1(cnc2c1c(n(C)c(=O)n2C)=O)C
n1(cnc2c1c(n(C)c(n2C)=O)=O)C
n1(cnc2n(c(n(c(c12)=O)C)=O)C)C
n1(cnc2n(c(n(c(c21)=O)C)=O)C)C
n1(cnc2n(c(n(c(=O)c12)C)=O)C)C
n1(cnc2n(c(n(c(=O)c21)C)=O)C)C
n1(cnc2n(c(n(C)c(c12)=O)=O)C)C
n1(cnc2n(c(n(C)c(c21)=O)=O)C)C
n1(cnc2n(c(n(C)c(=O)c12)=O)C)C
n1(cnc2n(c(n(C)c(=O)c21)=O)C)C
n1(cnc2n(c(=O)n(c(c12)=O)C)C)C
n1(cnc2n(c(=O)n(c(c21)=O)C)C)C
n1(cnc2n(c(=O)n(c(=O)c12)C)C)C
n1(cnc2n(c(=O)n(c(=O)c21)C)C)C
n1(cnc2n(c(=O)n(C)c(c12)=O)C)C
n1(cnc2n(c(=O)n(C)c(c21)=O)C)C
n1(cnc2n(c(=O)n(C)c(=O)c12)C)C
n1(cnc2n(c(=O)n(C)c(=O)c21)C)C
n1(cnc2n(C)c(n(c(c12)=O)C)=O)C
n1(cnc2n(C)c(n(c(c21)=O)C)=O)C
n1(cnc2n(C)c(n(c(=O)c12)C)=O)C
n1(cnc2n(C)c(n(c(=O)c21)C)=O)C
n1(cnc2n(C)c(n(C)c(c12)=O)=O)C
n1(cnc2n(C)c(n(C)c(c21)=O)=O)C
n1(cnc2n(C)c(n(C)c(=O)c12)=O)C
n1(cnc2n(C)c(n(C)c(=O)c21)=O)C
n1(cnc2n(C)c(=O)n(c(c12)=O)C)C
n1(cnc2n(C)c(=O)n(c(c21)=O)C)C
n1(cnc2n(C)c(=O)n(c(=O)c12)C)C
n1(cnc2n(C)c(=O)n(c(=O)c21)C)C
n1(cnc2n(C)c(=O)n(C)c(c12)=O)C
n1(cnc2n(C)c(=O)n(C)c(c21)=O)C
n1(cnc2n(C)c(=O)n(C)c(=O)c12)C
n1(cnc2n(C)c(=O)n(C)c(=O)c21)C
n1(cnc(n2C)c1c(=O)n(c2=O)C)C
n1(cnc(n2C)c1c(=O)n(C)c2=O)C
n1(cnc(n2C)c1c(n(c2=O)C)=O)C
n1(cnc(n2C)c1c(n(C)c2=O)=O)C
n1(cnc(n(c2=O)C)c1c(=O)n2C)C
n1(cnc(n(c2=O)C)c1c(n2C)=O)C
n1(cnc(n(c(n2C)=O)C)c1c2=O)C
n1(cnc(n(c(n(c2=O)C)=O)C)c12)C
n1(cnc(n(c(n(c2=O)C)=O)C)c21)C
n1(cnc(n(c(n(C)c2=O)=O)C)c12)C
n1(cnc(n(c(n(C)c2=O)=O)C)c21)C
n1(cnc(n(c(=O)n2C)C)c1c2=O)C
n1(cnc(n(c(=O)n(c2=O)C)C)c12)C
n1(cnc(n(c(=O)n(c2=O)C)C)c21)C
n1(cnc(n(c(=O)n(C)c2=O)C)c12)C
n1(cnc(n(c(=O)n(C)c2=O)C)c21)C
n1(cnc(n(C)c2=O)c1c(=O)n2C)C
n1(cnc(n(C)c2=O)c1c(n2C)=O)C
n1(cnc(n(C)c(n2C)=O)c1c2=O)C
n1(cnc(n(C)c(n(c2=O)C)=O)c12)C
n1(cnc(n(C)c(n(c2=O)C)=O)c21)C
n1(cnc(n(C)c(n(C)c2=O)=O)c12)C
n1(cnc(n(C)c(n(C)c2=O)=O)c21)C
n1(cnc(n(C)c(=O)n2C)c1c2=O)C
n1(cnc(n(C)c(=O)n(c2=O)C)c12)C
n1(cnc(n(C)c(=O)n(c2=O)C)c21)C
n1(cnc(n(C)c(=O)n(C)c2=O)c12)C
n1(cnc(n(C)c(=O)n(C)c2=O)c21)C
n1(cnc(c1c2=O)n(c(n2C)=O)C)C
n1(cnc(c1c2=O)n(c(=O)n2C)C)C
n1(cnc(c1c2=O)n(C)c(n2C)=O)C
n1(cnc(c1c2=O)n(C)c(=O)n2C)C
n1(cnc(c1c(=O)n2C)n(c2=O)C)C
n1(cnc(c1c(=O)n2C)n(C)c2=O)C
n1(cnc(c1c(=O)n(c2=O)C)n2C)C
n1(cnc(c1c(=O)n(C)c2=O)n2C)C
n1(cnc(c1c(n2C)=O)n(c2=O)C)C
n1(cnc(c1c(n2C)=O)n(C)c2=O)C
n1(cnc(c1c(n(c2=O)C)=O)n2C)C
n1(cnc(c1c(n(C)c2=O)=O)n2C)C
n1(C)c2c(=O)n(c(=O)n(c2nc1)C)C
n1(C)c2c(=O)n(c(=O)n(C)c2nc1)C
n1(C)c2c(=O)n(c(n(c2nc1)C)=O)C
n1(C)c2c(=O)n(c(n(C)c2nc1)=O)C
n1(C)c2c(=O)n(C)c(=O)n(c2nc1)C
n1(C)c2c(=O)n(C)c(=O)n(C)c2nc1
n1(C)c2c(=O)n(C)c(n(c2nc1)C)=O
n1(C)c2c(=O)n(C)c(n(C)c2nc1)=O
n1(C)c2c(n(c(=O)n(c2nc1)C)C)=O
n1(C)c2c(n(c(=O)n(C)c2nc1)C)=O
n1(C)c2c(n(c(n(c2nc1)C)=O)C)=O
n1(C)c2c(n(c(n(C)c2nc1)=O)C)=O
n1(C)c2c(n(C)c(=O)n(c2nc1)C)=O
n1(C)c2c(n(C)c(=O)n(C)c2nc1)=O
n1(C)c2c(n(C)c(n(c2nc1)C)=O)=O
n1(C)c2c(n(C)c(n(C)c2nc1)=O)=O
n1(C)c2c(nc1)n(c(n(c2=O)C)=O)C
n1(C)c2c(nc1)n(c(n(C)c2=O)=O)C
n1(C)c2c(nc1)n(c(=O)n(c2=O)C)C
n1(C)c2c(nc1)n(c(=O)n(C)c2=O)C
n1(C)c2c(nc1)n(C)c(n(c2=O)C)=O
n1(C)c2c(nc1)n(C)c(n(C)c2=O)=O
n1(C)c2c(nc1)n(C)c(=O)n(c2=O)C
n1(C)c2c(nc1)n(C)c(=O)n(C)c2=O
n1(C)c2c(n(c(n(c2=O)C)=O)C)nc1
n1(C)c2c(n(c(n(C)c2=O)=O)C)nc1
n1(C)c2c(n(c(=O)n(c2=O)C)C)nc1
n1(C)c2c(n(c(=O)n(C)c2=O)C)nc1
n1(C)c2c(n(C)c(n(c2=O)C)=O)nc1
n1(C)c2c(n(C)c(n(C)c2=O)=O)nc1
n1(C)c2c(n(C)c(=O)n(c2=O)C)nc1
n1(C)c2c(n(C)c(=O)n(C)c2=O)nc1
n1(C)c(c2nc1)c(=O)n(c(=O)n2C)C
n1(C)c(c2nc1)c(=O)n(c(n2C)=O)C
n1(C)c(c2nc1)c(=O)n(C)c(=O)n2C
n1(C)c(c2nc1)c(=O)n(C)c(n2C)=O
n1(C)c(c2nc1)c(n(c(=O)n2C)C)=O
n1(C)c(c2nc1)c(n(c(n2C)=O)C)=O
n1(C)c(c2nc1)c(n(C)c(=O)n2C)=O
n1(C)c(c2nc1)c(n(C)c(n2C)=O)=O
n1(C)c(c(nc1)n2C)c(=O)n(c2=O)C
n1(C)c(c(nc1)n2C)c(=O)n(C)c2=O
n1(C)c(c(nc1)n2C)c(n(c2=O)C)=O
n1(C)c(c(nc1)n2C)c(n(C)c2=O)=O
n1(C)c(c(nc1)n(c2=O)C)c(=O)n2C
n1(C)c(c(nc1)n(c2=O)C)c(n2C)=O
n1(C)c(c(nc1)n(c(n2C)=O)C)c2=O
n1(C)c(c(nc1)n(c(=O)n2C)C)c2=O
n1(C)c(c(nc1)n(C)c2=O)c(=O)n2C
n1(C)c(c(nc1)n(C)c2=O)c(n2C)=O
n1(C)c(c(nc1)n(C)c(n2C)=O)c2=O
n1(C)c(c(nc1)n(C)c(=O)n2C)c2=O
n1(C)c(c(n2C)nc1)c(=O)n(c2=O)C
n1(C)c(c(n2C)nc1)c(=O)n(C)c2=O
n1(C)c(c(n2C)nc1)c(n(c2=O)C)=O
n1(C)c(c(n2C)nc1)c(n(C)c2=O)=O
n1(C)c(c(n(c2=O)C)nc1)c(=O)n2C
n1(C)c(c(n(c2=O)C)nc1)c(n2C)=O
n1(C)c(c(n(c(n2C)=O)C)nc1)c2=O
n1(C)c(c(n(c(=O)n2C)C)nc1)c2=O
n1(C)c(c(n(C)c2=O)nc1)c(=O)n2C
n1(C)c(c(n(C)c2=O)nc1)c(n2C)=O
n1(C)c(c(n(C)c(n2C)=O)nc1)c2=O
n1(C)c(c(n(C)c(=O)n2C)nc1)c2=O
n1(C)c(c2=O)c(nc1)n(c(n2C)=O)C
n1(C)c(c2=O)c(nc1)n(c(=O)n2C)C
n1(C)c(c2=O)c(nc1)n(C)c(n2C)=O
n1(C)c(c2=O)c(nc1)n(C)c(=O)n2C
n1(C)c(c2=O)c(n(c(n2C)=O)C)nc1
n1(C)c(c2=O)c(n(c(=O)n2C)C)nc1
n1(C)c(c2=O)c(n(C)c(n2C)=O)nc1
n1(C)c(c2=O)c(n(C)c(=O)n2C)nc1
n1(C)c(c(=O)n2C)c(nc1)n(c2=O)C
n1(C)c(c(=O)n2C)c(nc1)n(C)c2=O
n1(C)c(c(=O)n2C)c(n(c2=O)C)nc1
n1(C)c(c(=O)n2C)c(n(C)c2=O)nc1
n1(C)c(c(=O)n(c2=O)C)c(nc1)n2C
n1(C)c(c(=O)n(c2=O)C)c(n2C)nc1
n1(C)c(c(=O)n(c(=O)n2C)C)c2nc1
n1(C)c(c(=O)n(c(n2C)=O)C)c2nc1
n1(C)c(c(=O)n(C)c2=O)c(nc1)n2C
n1(C)c(c(=O)n(C)c2=O)c(n2C)nc1
n1(C)c(c(=O)n(C)c(=O)n2C)c2nc1
n1(C)c(c(=O)n(C)c(n2C)=O)c2nc1
n1(C)c(c(n2C)=O)c(nc1)n(c2=O)C
n1(C)c(c(n2C)=O)c(nc1)n(C)c2=O
n1(C)c(c(n2C)=O)c(n(c2=O)C)nc1
n1(C)c(c(n2C)=O)c(n(C)c2=O)nc1
n1(C)c(c(n(c2=O)C)=O)c(nc1)n2C
n1(C)c(c(n(c2=O)C)=O)c(n2C)nc1
n1(C)c(c(n(c(=O)n2C)C)=O)c2nc1
n1(C)c(c(n(c(n2C)=O)C)=O)c2nc1
n1(C)c(c(n(C)c2=O)=O)c(nc1)n2C
n1(C)c(c(n(C)c2=O)=O)c(n2C)nc1
n1(C)c(c(n(C)c(=O)n2C)=O)c2nc1
n1(C)c(c(n(C)c(n2C)=O)=O)c2nc1
n1(c2c(=O)n(c(=O)n(c2nc1)C)C)C
n1(c2c(=O)n(c(=O)n(C)c2nc1)C)C
n1(c2c(=O)n(c(n(c2nc1)C)=O)C)C
n1(c2c(=O)n(c(n(C)c2nc1)=O)C)C
n1(c2c(=O)n(C)c(=O)n(c2nc1)C)C
n1(c2c(=O)n(C)c(=O)n(C)c2nc1)C
n1(c2c(=O)n(C)c(n(c2nc1)C)=O)C
n1(c2c(=O)n(C)c(n(C)c2nc1)=O)C
n1(c2c(n(c(=O)n(c2nc1)C)C)=O)C
n1(c2c(n(c(=O)n(C)c2nc1)C)=O)C
n1(c2c(n(c(n(c2nc1)C)=O)C)=O)C
n1(c2c(n(c(n(C)c2nc1)=O)C)=O)C
n1(c2c(n(C)c(=O)n(c2nc1)C)=O)C
n1(c2c(n(C)c(=O)n(C)c2nc1)=O)C
n1(c2c(n(C)c(n(c2nc1)C)=O)=O)C
n1(c2c(n(C)c(n(C)c2nc1)=O)=O)C
n1(c2c(nc1)n(c(n(c2=O)C)=O)C)C
n1(c2c(nc1)n(c(n(C)c2=O)=O)C)C
n1(c2c(nc1)n(c(=O)n(c2=O)C)C)C
n1(c2c(nc1)n(c(=O)n(C)c2=O)C)C
n1(c2c(nc1)n(C)c(n(c2=O)C)=O)C
n1(c2c(nc1)n(C)c(n(C)c2=O)=O)C
n1(c2c(nc1)n(C)c(=O)n(c2=O)C)C
n1(c2c(nc1)n(C)c(=O)n(C)c2=O)C
n1(c2c(n(c(n(c2=O)C)=O)C)nc1)C
n1(c2c(n(c(n(C)c2=O)=O)C)nc1)C
n1(c2c(n(c(=O)n(c2=O)C)C)nc1)C
n1(c2c(n(c(=O)n(C)c2=O)C)nc1)C
n1(c2c(n(C)c(n(c2=O)C)=O)nc1)C
n1(c2c(n(C)c(n(C)c2=O)=O)nc1)C
n1(c2c(n(C)c(=O)n(c2=O)C)nc1)C
n1(c2c(n(C)c(=O)n(C)c2=O)nc1)C
n1(c(c2nc1)c(=O)n(c(=O)n2C)C)C
n1(c(c2nc1)c(=O)n(c(n2C)=O)C)C
n1(c(c2nc1)c(=O)n(C)c(=O)n2C)C
n1(c(c2nc1)c(=O)n(C)c(n2C)=O)C
n1(c(c2nc1)c(n(c(=O)n2C)C)=O)C
n1(c(c2nc1)c(n(c(n2C)=O)C)=O)C
n1(c(c2nc1)c(n(C)c(=O)n2C)=O)C
n1(c(c2nc1)c(n(C)c(n2C)=O)=O)C
n1(c(c(nc1)n2C)c(=O)n(c2=O)C)C
n1(c(c(nc1)n2C)c(=O)n(C)c2=O)C
n1(c(c(nc1)n2C)c(n(c2=O)C)=O)C
n1(c(c(nc1)n2C)c(n(C)c2=O)=O)C
n1(c(c(nc1)n(c2=O)C)c(=O)n2C)C
n1(c(c(nc1)n(c2=O)C)c(n2C)=O)C
n1(c(c(nc1)n(c(n2C)=O)C)c2=O)C
n1(c(c(nc1)n(c(=O)n2C)C)c2=O)C
n1(c(c(nc1)n(C)c2=O)c(=O)n2C)C
n1(c(c(nc1)n(C)c2=O)c(n2C)=O)C
n1(c(c(nc1)n(C)c(n2C)=O)c2=O)C
n1(c(c(nc1)n(C)c(=O)n2C)c2=O)C
n1(c(c(n2C)nc1)c(=O)n(c2=O)C)C
n1(c(c(n2C)nc1)c(=O)n(C)c2=O)C
n1(c(c(n2C)nc1)c(n(c2=O)C)=O)C
n1(c(c(n2C)nc1)c(n(C)c2=O)=O)C
n1(c(c(n(c2=O)C)nc1)c(=O)n2C)C
n1(c(c(n(c2=O)C)nc1)c(n2C)=O)C
n1(c(c(n(c(n2C)=O)C)nc1)c2=O)C
n1(c(c(n(c(=O)n2C)C)nc1)c2=O)C
n1(c(c(n(C)c2=O)nc1)c(=O)n2C)C
n1(c(c(n(C)c2=O)nc1)c(n2C)=O)C
n1(c(c(n(C)c(n2C)=O)nc1)c2=O)C
n1(c(c(n(C)c(=O)n2C)nc1)c2=O)C
n1(c(c2=O)c(nc1)n(c(n2C)=O)C)C
n1(c(c2=O)c(nc1)n(c(=O)n2C)C)C
n1(c(c2=O)c(nc1)n(C)c(n2C)=O)C
n1(c(c2=O)c(nc1)n(C)c(=O)n2C)C
n1(c(c2=O)c(n(c(n2C)=O)C)nc1)C
n1(c(c2=O)c(n(c(=O)n2C)C)nc1)C
n1(c(c2=O)c(n(C)c(n2C)=O)nc1)C
n1(c(c2=O)c(n(C)c(=O)n2C)nc1)C
n1(c(c(=O)n2C)c(nc1)n(c2=O)C)C
n1(c(c(=O)n2C)c(nc1)n(C)c2=O)C
n1(c(c(=O)n2C)c(n(c2=O)C)nc1)C
n1(c(c(=O)n2C)c(n(C)c2=O)nc1)C
n1(c(c(=O)n(c2=O)C)c(nc1)n2C)C
n1(c(c(=O)n(c2=O)C)c(n2C)nc1)C
n1(c(c(=O)n(c(=O)n2C)C)c2nc1)C
n1(c(c(=O)n(c(n2C)=O)C)c2nc1)C
n1(c(c(=O)n(C)c2=O)c(nc1)n2C)C
n1(c(c(=O)n(C)c2=O)c(n2C)nc1)C
n1(c(c(=O)n(C)c(=O)n2C)c2nc1)C
n1(c(c(=O)n(C)c(n2C)=O)c2nc1)C
n1(c(c(n2C)=O)c(nc1)n(c2=O)C)C
n1(c(c(n2C)=O)c(nc1)n(C)c2=O)C
n1(c(c(n2C)=O)c(n(c2=O)C)nc1)C
n1(c(c(n2C)=O)c(n(C)c2=O)nc1)C
n1(c(c(n(c2=O)C)=O)c(nc1)n2C)C
n1(c(c(n(c2=O)C)=O)c(n2C)nc1)C
n1(c(c(n(c(=O)n2C)C)=O)c2nc1)C
n1(c(c(n(c(n2C)=O)C)=O)c2nc1)C
n1(c(c(n(C)c2=O)=O)c(nc1)n2C)C
n1(c(c(n(C)c2=O)=O)c(n2C)nc1)C
n1(c(c(n(C)c(=O)n2C)=O)c2nc1)C
n1(c(c(n(C)c(n2C)=O)=O)c2nc1)C
c1nc2c(n1C)c(=O)n(c(=O)n2C)C
c1nc2c(n1C)c(=O)n(c(n2C)=O)C
c1nc2c(n1C)c(=O)n(C)c(=O)n2C
c1nc2c(n1C)c(=O)n(C)c(n2C)=O
c1nc2c(n1C)c(n(c(=O)n2C)C)=O
c1nc2c(n1C)c(n(c(n2C)=O)C)=O
c1nc2c(n1C)c(n(C)c(=O)n2C)=O
c1nc2c(n1C)c(n(C)c(n2C)=O)=O
c1nc2c(c(=O)n(c(=O)n2C)C)n1C
c1nc2c(c(=O)n(c(n2C)=O)C)n1C
c1nc2c(c(=O)n(C)c(=O)n2C)n1C
c1nc2c(c(=O)n(C)c(n2C)=O)n1C
c1nc2c(c(n(c(=O)n2C)C)=O)n1C
c1nc2c(c(n(c(n2C)=O)C)=O)n1C
c1nc2c(c(n(C)c(=O)n2C)=O)n1C
c1nc2c(c(n(C)c(n2C)=O)=O)n1C
c1nc2n(c(n(c(c2n1C)=O)C)=O)C
c1nc2n(c(n(c(=O)c2n1C)C)=O)C
c1nc2n(c(n(C)c(c2n1C)=O)=O)C
c1nc2n(c(n(C)c(=O)c2n1C)=O)C
c1nc2n(c(=O)n(c(c2n1C)=O)C)C
c1nc2n(c(=O)n(c(=O)c2n1C)C)C
c1nc2n(c(=O)n(C)c(c2n1C)=O)C
c1nc2n(c(=O)n(C)c(=O)c2n1C)C
c1nc2n(C)c(n(c(c2n1C)=O)C)=O
c1nc2n(C)c(n(c(=O)c2n1C)C)=O
c1nc2n(C)c(n(C)c(c2n1C)=O)=O
c1nc2n(C)c(n(C)c(=O)c2n1C)=O
c1nc2n(C)c(=O)n(c(c2n1C)=O)C
c1nc2n(C)c(=O)n(c(=O)c2n1C)C
c1nc2n(C)c(=O)n(C)c(c2n1C)=O
c1nc2n(C)c(=O)n(C)c(=O)c2n1C
c1nc(n2C)c(n1C)c(=O)n(c2=O)C
c1nc(n2C)c(n1C)c(=O)n(C)c2=O
c1nc(n2C)c(n1C)c(n(c2=O)C)=O
c1nc(n2C)c(n1C)c(n(C)c2=O)=O
c1nc(n2C)c(c(=O)n(c2=O)C)n1C
c1nc(n2C)c(c(=O)n(C)c2=O)n1C
c1nc(n2C)c(c(n(c2=O)C)=O)n1C
c1nc(n2C)c(c(n(C)c2=O)=O)n1C
c1nc(n(c2=O)C)c(n1C)c(=O)n2C
c1nc(n(c2=O)C)c(n1C)c(n2C)=O
c1nc(n(c2=O)C)c(c(=O)n2C)n1C
c1nc(n(c2=O)C)c(c(n2C)=O)n1C
c1nc(n(c(n2C)=O)C)c(n1C)c2=O
c1nc(n(c(n2C)=O)C)c(c2=O)n1C
c1nc(n(c(n(c2=O)C)=O)C)c2n1C
c1nc(n(c(n(C)c2=O)=O)C)c2n1C
c1nc(n(c(=O)n2C)C)c(n1C)c2=O
c1nc(n(c(=O)n2C)C)c(c2=O)n1C
c1nc(n(c(=O)n(c2=O)C)C)c2n1C
c1nc(n(c(=O)n(C)c2=O)C)c2n1C
c1nc(n(C)c2=O)c(n1C)c(=O)n2C
c1nc(n(C)c2=O)c(n1C)c(n2C)=O
c1nc(n(C)c2=O)c(c(=O)n2C)n1C
c1nc(n(C)c2=O)c(c(n2C)=O)n1C
c1nc(n(C)c(n2C)=O)c(n1C)c2=O
c1nc(n(C)c(n2C)=O)c(c2=O)n1C
c1nc(n(C)c(n(c2=O)C)=O)c2n1C
c1nc(n(C)c(n(C)c2=O)=O)c2n1C
c1nc(n(C)c(=O)n2C)c(n1C)c2=O
c1nc(n(C)c(=O)n2C)c(c2=O)n1C
c1nc(n(C)c(=O)n(c2=O)C)c2n1C
c1nc(n(C)c(=O)n(C)c2=O)c2n1C
c1nc(c2n1C)n(c(n(c2=O)C)=O)C
c1nc(c2n1C)n(c(n(C)c2=O)=O)C
c1nc(c2n1C)n(c(=O)n(c2=O)C)C
c1nc(c2n1C)n(c(=O)n(C)c2=O)C
c1nc(c2n1C)n(C)c(n(c2=O)C)=O
c1nc(c2n1C)n(C)c(n(C)c2=O)=O
c1nc(c2n1C)n(C)c(=O)n(c2=O)C
c1nc(c2n1C)n(C)c(=O)n(C)c2=O
c1nc(c(n1C)c2=O)n(c(n2C)=O)C
c1nc(c(n1C)c2=O)n(c(=O)n2C)C
c1nc(c(n1C)c2=O)n(C)c(n2C)=O
c1nc(c(n1C)c2=O)n(C)c(=O)n2C
c1nc(c(n1C)c(=O)n2C)n(c2=O)C
c1nc(c(n1C)c(=O)n2C)n(C)c2=O
c1nc(c(n1C)c(=O)n(c2=O)C)n2C
c1nc(c(n1C)c(=O)n(C)c2=O)n2C
c1nc(c(n1C)c(n2C)=O)n(c2=O)C
c1nc(c(n1C)c(n2C)=O)n(C)c2=O
c1nc(c(n1C)c(n(c2=O)C)=O)n2C
c1nc(c(n1C)c(n(C)c2=O)=O)n2C
c1nc(c(c2=O)n1C)n(c(n2C)=O)C
c1nc(c(c2=O)n1C)n(c(=O)n2C)C
c1nc(c(c2=O)n1C)n(C)c(n2C)=O
c1nc(c(c2=O)n1C)n(C)c(=O)n2C
c1nc(c(c(=O)n2C)n1C)n(c2=O)C
c1nc(c(c(=O)n2C)n1C)n(C)c2=O
c1nc(c(c(=O)n(c2=O)C)n1C)n2C
c1nc(c(c(=O)n(C)c2=O)n1C)n2C
c1nc(c(c(n2C)=O)n1C)n(c2=O)C
c1nc(c(c(n2C)=O)n1C)n(C)c2=O
c1nc(c(c(n(c2=O)C)=O)n1C)n2C
c1nc(c(c(n(C)c2=O)=O)n1C)n2C
c1n(C)c2c(=O)n(c(=O)n(c2n1)C)C
c1n(C)c2c(=O)n(c(=O)n(C)c2n1)C
c1n(C)c2c(=O)n(c(n(c2n1)C)=O)C
c1n(C)c2c(=O)n(c(n(C)c2n1)=O)C
c1n(C)c2c(=O)n(C)c(=O)n(c2n1)C
c1n(C)c2c(=O)n(C)c(=O)n(C)c2n1
c1n(C)c2c(=O)n(C)c(n(c2n1)C)=O
c1n(C)c2c(=O)n(C)c(n(C)c2n1)=O
c1n(C)c2c(n(c(=O)n(c2n1)C)C)=O
c1n(C)c2c(n(c(=O)n(C)c2n1)C)=O
c1n(C)c2c(n(c(n(c2n1)C)=O)C)=O
c1n(C)c2c(n(c(n(C)c2n1)=O)C)=O
c1n(C)c2c(n(C)c(=O)n(c2n1)C)=O
c1n(C)c2c(n(C)c(=O)n(C)c2n1)=O
c1n(C)c2c(n(C)c(n(c2n1)C)=O)=O
c1n(C)c2c(n(C)c(n(C)c2n1)=O)=O
c1n(C)c2c(n1)n(c(n(c2=O)C)=O)C
c1n(C)c2c(n1)n(c(n(C)c2=O)=O)C
c1n(C)c2c(n1)n(c(=O)n(c2=O)C)C
c1n(C)c2c(n1)n(c(=O)n(C)c2=O)C
c1n(C)c2c(n1)n(C)c(n(c2=O)C)=O
c1n(C)c2c(n1)n(C)c(n(C)c2=O)=O
c1n(C)c2c(n1)n(C)c(=O)n(c2=O)C
c1n(C)c2c(n1)n(C)c(=O)n(C)c2=O
c1n(C)c2c(n(c(n(c2=O)C)=O)C)n1
c1n(C)c2c(n(c(n(C)c2=O)=O)C)n1
c1n(C)c2c(n(c(=O)n(c2=O)C)C)n1
c1n(C)c2c(n(c(=O)n(C)c2=O)C)n1
c1n(C)c2c(n(C)c(n(c2=O)C)=O)n1
c1n(C)c2c(n(C)c(n(C)c2=O)=O)n1
c1n(C)c2c(n(C)c(=O)n(c2=O)C)n1
c1n(C)c2c(n(C)c(=O)n(C)c2=O)n1
c1n(C)c(c2n1)c(=O)n(c(=O)n2C)C
c1n(C)c(c2n1)c(=O)n(c(n2C)=O)C
c1n(C)c(c2n1)c(=O)n(C)c(=O)n2C
c1n(C)c(c2n1)c(=O)n(C)c(n2C)=O
c1n(C)c(c2n1)c(n(c(=O)n2C)C)=O
c1n(C)c(c2n1)c(n(c(n2C)=O)C)=O
c1n(C)c(c2n1)c(n(C)c(=O)n2C)=O
c1n(C)c(c2n1)c(n(C)c(n2C)=O)=O
c1n(C)c(c(n1)n2C)c(=O)n(c2=O)C
c1n(C)c(c(n1)n2C)c(=O)n(C)c2=O
c1n(C)c(c(n1)n2C)c(n(c2=O)C)=O
c1n(C)c(c(n1)n2C)c(n(C)c2=O)=O
c1n(C)c(c(n1)n(c2=O)C)c(=O)n2C
c1n(C)c(c(n1)n(c2=O)C)c(n2C)=O
c1n(C)c(c(n1)n(c(n2C)=O)C)c2=O
c1n(C)c(c(n1)n(c(=O)n2C)C)c2=O
c1n(C)c(c(n1)n(C)c2=O)c(=O)n2C
c1n(C)c(c(n1)n(C)c2=O)c(n2C)=O
c1n(C)c(c(n1)n(C)c(n2C)=O)c2=O
c1n(C)c(c(n1)n(C)c(=O)n2C)c2=O
c1n(C)c(c(n2C)n1)c(=O)n(c2=O)C
c1n(C)c(c(n2C)n1)c(=O)n(C)c2=O
c1n(C)c(c(n2C)n1)c(n(c2=O)C)=O
c1n(C)c(c(n2C)n1)c(n(C)c2=O)=O
c1n(C)c(c(n(c2=O)C)n1)c(=O)n2C
c1n(C)c(c(n(c2=O)C)n1)c(n2C)=O
c1n(C)c(c(n(c(n2C)=O)C)n1)c2=O
c1n(C)c(c(n(c(=O)n2C)C)n1)c2=O
c1n(C)c(c(n(C)c2=O)n1)c(=O)n2C
c1n(C)c(c(n(C)c2=O)n1)c(n2C)=O
c1n(C)c(c(n(C)c(n2C)=O)n1)c2=O
c1n(C)c(c(n(C)c(=O)n2C)n1)c2=O
c1n(C)c(c2=O)c(n1)n(c(n2C)=O)C
c1n(C)c(c2=O)c(n1)n(c(=O)n2C)C
c1n(C)c(c2=O)c(n1)n(C)c(n2C)=O
c1n(C)c(c2=O)c(n1)n(C)c(=O)n2C
c1n(C)c(c2=O)c(n(c(n2C)=O)C)n1
c1n(C)c(c2=O)c(n(c(=O)n2C)C)n1
c1n(C)c(c2=O)c(n(C)c(n2C)=O)n1
c1n(C)c(c2=O)c(n(C)c(=O)n2C)n1
c1n(C)c(c(=O)n2C)c(n1)n(c2=O)C
c1n(C)c(c(=O)n2C)c(n1)n(C)c2=O
c1n(C)c(c(=O)n2C)c(n(c2=O)C)n1
c1n(C)c(c(=O)n2C)c(n(C)c2=O)n1
c1n(C)c(c(=O)n(c2=O)C)c(n1)n2C
c1n(C)c(c(=O)n(c2=O)C)c(n2C)n1
c1n(C)c(c(=O)n(c(=O)n2C)C)c2n1
c1n(C)c(c(=O)n(c(n2C)=O)C)c2n1
c1n(C)c(c(=O)n(C)c2=O)c(n1)n2C
c1n(C)c(c(=O)n(C)c2=O)c(n2C)n1
c1n(C)c(c(=O)n(C)c(=O)n2C)c2n1
c1n(C)c(c(=O)n(C)c(n2C)=O)c2n1
c1n(C)c(c(n2C)=O)c(n1)n(c2=O)C
c1n(C)c(c(n2C)=O)c(n1)n(C)c2=O
c1n(C)c(c(n2C)=O)c(n(c2=O)C)n1
c1n(C)c(c(n2C)=O)c(n(C)c2=O)n1
c1n(C)c(c(n(c2=O)C)=O)c(n1)n2C
c1n(C)c(c(n(c2=O)C)=O)c(n2C)n1
c1n(C)c(c(n(c(=O)n2C)C)=O)c2n1
c1n(C)c(c(n(c(n2C)=O)C)=O)c2n1
c1n(C)c(c(n(C)c2=O)=O)c(n1)n2C
c1n(C)c(c(n(C)c2=O)=O)c(n2C)n1
c1n(C)c(c(n(C)c(=O)n2C)=O)c2n1
c1n(C)c(c(n(C)c(n2C)=O)=O)c2n1
c1n(c2c(=O)n(c(=O)n(c2n1)C)C)C
c1n(c2c(=O)n(c(=O)n(C)c2n1)C)C
c1n(c2c(=O)n(c(n(c2n1)C)=O)C)C
c1n(c2c(=O)n(c(n(C)c2n1)=O)C)C
c1n(c2c(=O)n(C)c(=O)n(c2n1)C)C
c1n(c2c(=O)n(C)c(=O)n(C)c2n1)C
c1n(c2c(=O)n(C)c(n(c2n1)C)=O)C
c1n(c2c(=O)n(C)c(n(C)c2n1)=O)C
c1n(c2c(n(c(=O)n(c2n1)C)C)=O)C
c1n(c2c(n(c(=O)n(C)c2n1)C)=O)C
c1n(c2c(n(c(n(c2n1)C)=O)C)=O)C
c1n(c2c(n(c(n(C)c2n1)=O)C)=O)C
c1n(c2c(n(C)c(=O)n(c2n1)C)=O)C
c1n(c2c(n(C)c(=O)n(C)c2n1)=O)C
c1n(c2c(n(C)c(n(c2n1)C)=O)=O)C
c1n(c2c(n(C)c(n(C)c2n1)=O)=O)C
c1n(c2c(n1)n(c(n(c2=O)C)=O)C)C
c1n(c2c(n1)n(c(n(C)c2=O)=O)C)C
c1n(c2c(n1)n(c(=O)n(c2=O)C)C)C
c1n(c2c(n1)n(c(=O)n(C)c2=O)C)C
c1n(c2c(n1)n(C)c(n(c2=O)C)=O)C
c1n(c2c(n1)n(C)c(n(C)c2=O)=O)C
c1n(c2c(n1)n(C)c(=O)n(c2=O)C)C
c1n(c2c(n1)n(C)c(=O)n(C)c2=O)C
c1n(c2c(n(c(n(c2=O)C)=O)C)n1)C
c1n(c2c(n(c(n(C)c2=O)=O)C)n1)C
c1n(c2c(n(c(=O)n(c2=O)C)C)n1)C
c1n(c2c(n(c(=O)n(C)c2=O)C)n1)C
c1n(c2c(n(C)c(n(c2=O)C)=O)n1)C
c1n(c2c(n(C)c(n(C)c2=O)=O)n1)C
c1n(c2c(n(C)c(=O)n(c2=O)C)n1)C
c1n(c2c(n(C)c(=O)n(C)c2=O)n1)C
c1n(c(c2n1)c(=O)n(c(=O)n2C)C)C
c1n(c(c2n1)c(=O)n(c(n2C)=O)C)C
c1n(c(c2n1)c(=O)n(C)c(=O)n2C)C
c1n(c(c2n1)c(=O)n(C)c(n2C)=O)C
c1n(c(c2n1)c(n(c(=O)n2C)C)=O)C
c1n(c(c2n1)c(n(c(n2C)=O)C)=O)C
c1n(c(c2n1)c(n(C)c(=O)n2C)=O)C
c1n(c(c2n1)c(n(C)c(n2C)=O)=O)C
c1n(c(c(n1)n2C)c(=O)n(c2=O)C)C
c1n(c(c(n1)n2C)c(=O)n(C)c2=O)C
c1n(c(c(n1)n2C)c(n(c2=O)C)=O)C
c1n(c(c(n1)n2C)c(n(C)c2=O)=O)C
c1n(c(c(n1)n(c2=O)C)c(=O)n2C)C
c1n(c(c(n1)n(c2=O)C)c(n2C)=O)C
c1n(c(c(n1)n(c(n2C)=O)C)c2=O)C
c1n(c(c(n1)n(c(=O)n2C)C)c2=O)C
c1n(c(c(n1)n(C)c2=O)c(=O)n2C)C
c1n(c(c(n1)n(C)c2=O)c(n2C)=O)C
c1n(c(c(n1)n(C)c(n2C)=O)c2=O)C
c1n(c(c(n1)n(C)c(=O)n2C)c2=O)C
c1n(c(c(n2C)n1)c(=O)n(c2=O)C)C
c1n(c(c(n2C)n1)c(=O)n(C)c2=O)C
c1n(c(c(n2C)n1)c(n(c2=O)C)=O)C
c1n(c(c(n2C)n1)c(n(C)c2=O)=O)C
c1n(c(c(n(c2=O)C)n1)c(=O)n2C)C
c1n(c(c(n(c2=O)C)n1)c(n2C)=O)C
c1n(c(c(n(c(n2C)=O)C)n1)c2=O)C
c1n(c(c(n(c(=O)n2C)C)n1)c2=O)C
c1n(c(c(n(C)c2=O)n1)c(=O)n2C)C
c1n(c(c(n(C)c2=O)n1)c(n2C)=O)C
c1n(c(c(n(C)c(n2C)=O)n1)c2=O)C
c1n(c(c(n(C)c(=O)n2C)n1)c2=O)C
c1n(c(c2=O)c(n1)n(c(n2C)=O)C)C
c1n(c(c2=O)c(n1)n(c(=O)n2C)C)C
c1n(c(c2=O)c(n1)n(C)c(n2C)=O)C
c1n(c(c2=O)c(n1)n(C)c(=O)n2C)C
c1n(c(c2=O)c(n(c(n2C)=O)C)n1)C
c1n(c(c2=O)c(n(c(=O)n2C)C)n1)C
c1n(c(c2=O)c(n(C)c(n2C)=O)n1)C
c1n(c(c2=O)c(n(C)c(=O)n2C)n1)C
c1n(c(c(=O)n2C)c(n1)n(c2=O)C)C
c1n(c(c(=O)n2C)c(n1)n(C)c2=O)C
c1n(c(c(=O)n2C)c(n(c2=O)C)n1)C
c1n(c(c(=O)n2C)c(n(C)c2=O)n1)C
c1n(c(c(=O)n(c2=O)C)c(n1)n2C)C
c1n(c(c(=O)n(c2=O)C)c(n2C)n1)C
c1n(c(c(=O)n(c(=O)n2C)C)c2n1)C
c1n(c(c(=O)n(c(n2C)=O)C)c2n1)C
c1n(c(c(=O)n(C)c2=O)c(n1)n2C)C
c1n(c(c(=O)n(C)c2=O)c(n2C)n1)C
c1n(c(c(=O)n(C)c(=O)n2C)c2n1)C
c1n(c(c(=O)n(C)c(n2C)=O)c2n1)C
c1n(c(c(n2C)=O)c(n1)n(c2=O)C)C
c1n(c(c(n2C)=O)c(n1)n(C)c2=O)C
c1n(c(c(n2C)=O)c(n(c2=O)C)n1)C
c1n(c(c(n2C)=O)c(n(C)c2=O)n1)C
c1n(c(c(n(c2=O)C)=O)c(n1)n2C)C
c1n(c(c(n(c2=O)C)=O)c(n2C)n1)C
c1n(c(c(n(c(=O)n2C)C)=O)c2n1)C
c1n(c(c(n(c(n2C)=O)C)=O)c2n1)C
c1n(c(c(n(C)c2=O)=O)c(n1)n2C)C
c1n(c(c(n(C)c2=O)=O)c(n2C)n1)C
c1n(c(c(n(C)c(=O)n2C)=O)c2n1)C
c1n(c(c(n(C)c(n2C)=O)=O)c2n1)C
c(n1C)nc2c1c(=O)n(c(=O)n2C)C
c(n1C)nc2c1c(=O)n(c(n2C)=O)C
c(n1C)nc2c1c(=O)n(C)c(=O)n2C
c(n1C)nc2c1c(=O)n(C)c(n2C)=O
c(n1C)nc2c1c(n(c(=O)n2C)C)=O
c(n1C)nc2c1c(n(c(n2C)=O)C)=O
c(n1C)nc2c1c(n(C)c(=O)n2C)=O
c(n1C)nc2c1c(n(C)c(n2C)=O)=O
c(n1C)nc2n(c(n(c(c12)=O)C)=O)C
c(n1C)nc2n(c(n(c(c21)=O)C)=O)C
c(n1C)nc2n(c(n(c(=O)c12)C)=O)C
c(n1C)nc2n(c(n(c(=O)c21)C)=O)C
c(n1C)nc2n(c(n(C)c(c12)=O)=O)C
c(n1C)nc2n(c(n(C)c(c21)=O)=O)C
c(n1C)nc2n(c(n(C)c(=O)c12)=O)C
c(n1C)nc2n(c(n(C)c(=O)c21)=O)C
c(n1C)nc2n(c(=O)n(c(c12)=O)C)C
c(n1C)nc2n(c(=O)n(c(c21)=O)C)C
c(n1C)nc2n(c(=O)n(c(=O)c12)C)C
c(n1C)nc2n(c(=O)n(c(=O)c21)C)C
c(n1C)nc2n(c(=O)n(C)c(c12)=O)C
c(n1C)nc2n(c(=O)n(C)c(c21)=O)C
c(n1C)nc2n(c(=O)n(C)c(=O)c12)C
c(n1C)nc2n(c(=O)n(C)c(=O)c21)C
c(n1C)nc2n(C)c(n(c(c12)=O)C)=O
c(n1C)nc2n(C)c(n(c(c21)=O)C)=O
c(n1C)nc2n(C)c(n(c(=O)c12)C)=O
c(n1C)nc2n(C)c(n(c(=O)c21)C)=O
c(n1C)nc2n(C)c(n(C)c(c12)=O)=O
c(n1C)nc2n(C)c(n(C)c(c21)=O)=O
c(n1C)nc2n(C)c(n(C)c(=O)c12)=O
c(n1C)nc2n(C)c(n(C)c(=O)c21)=O
c(n1C)nc2n(C)c(=O)n(c(c12)=O)C
c(n1C)nc2n(C)c(=O)n(c(c21)=O)C
c(n1C)nc2n(C)c(=O)n(c(=O)c12)C
c(n1C)nc2n(C)c(=O)n(c(=O)c21)C
c(n1C)nc2n(C)c(=O)n(C)c(c12)=O
c(n1C)nc2n(C)c(=O)n(C)c(c21)=O
c(n1C)nc2n(C)c(=O)n(C)c(=O)c12
c(n1C)nc2n(C)c(=O)n(C)c(=O)c21
c(n1C)nc(n2C)c1c(=O)n(c2=O)C
c(n1C)nc(n2C)c1c(=O)n(C)c2=O
c(n1C)nc(n2C)c1c(n(c2=O)C)=O
c(n1C)nc(n2C)c1c(n(C)c2=O)=O
c(n1C)nc(n(c2=O)C)c1c(=O)n2C
c(n1C)nc(n(c2=O)C)c1c(n2C)=O
c(n1C)nc(n(c(n2C)=O)C)c1c2=O
c(n1C)nc(n(c(n(c2=O)C)=O)C)c12
c(n1C)nc(n(c(n(c2=O)C)=O)C)c21
c(n1C)nc(n(c(n(C)c2=O)=O)C)c12
c(n1C)nc(n(c(n(C)c2=O)=O)C)c21
c(n1C)nc(n(c(=O)n2C)C)c1c2=O
c(n1C)nc(n(c(=O)n(c2=O)C)C)c12
c(n1C)nc(n(c(=O)n(c2=O)C)C)c21
c(n1C)nc(n(c(=O)n(C)c2=O)C)c12
c(n1C)nc(n(c(=O)n(C)c2=O)C)c21
c(n1C)nc(n(C)c2=O)c1c(=O)n2C
c(n1C)nc(n(C)c2=O)c1c(n2C)=O
c(n1C)nc(n(C)c(n2C)=O)c1c2=O
c(n1C)nc(n(C)c(n(c2=O)C)=O)c12
c(n1C)nc(n(C)c(n(c2=O)C)=O)c21
c(n1C)nc(n(C)c(n(C)c2=O)=O)c12
c(n1C)nc(n(C)c(n(C)c2=O)=O)c21
c(n1C)nc(n(C)c(=O)n2C)c1c2=O
c(n1C)nc(n(C)c(=O)n(c2=O)C)c12
c(n1C)nc(n(C)c(=O)n(c2=O)C)c21
c(n1C)nc(n(C)c(=O)n(C)c2=O)c12
c(n1C)nc(n(C)c(=O)n(C)c2=O)c21
c(n1C)nc(c1c2=O)n(c(n2C)=O)C
c(n1C)nc(c1c2=O)n(c(=O)n2C)C
c(n1C)nc(c1c2=O)n(C)c(n2C)=O
c(n1C)nc(c1c2=O)n(C)c(=O)n2C
c(n1C)nc(c1c(=O)n2C)n(c2=O)C
c(n1C)nc(c1c(=O)n2C)n(C)c2=O
c(n1C)nc(c1c(=O)n(c2=O)C)n2C
c(n1C)nc(c1c(=O)n(C)c2=O)n2C
c(n1C)nc(c1c(n2C)=O)n(c2=O)C
c(n1C)nc(c1c(n2C)=O)n(C)c2=O
c(n1C)nc(c1c(n(c2=O)C)=O)n2C
c(n1C)nc(c1c(n(C)c2=O)=O)n2C
c(n(C)c1c2=O)nc1n(c(n2C)=O)C
c(n(C)c1c2=O)nc1n(c(=O)n2C)C
c(n(C)c1c2=O)nc1n(C)c(n2C)=O
c(n(C)c1c2=O)nc1n(C)c(=O)n2C
c(n(C)c1c(=O)n2C)nc1n(c2=O)C
c(n(C)c1c(=O)n2C)nc1n(C)c2=O
c(n(C)c1c(=O)n(c2=O)C)nc1n2C
c(n(C)c1c(=O)n(c(=O)n2C)C)nc21
c(n(C)c1c(=O)n(c(=O)n2C)C)nc12
c(n(C)c1c(=O)n(c(n2C)=O)C)nc21
c(n(C)c1c(=O)n(c(n2C)=O)C)nc12
c(n(C)c1c(=O)n(C)c2=O)nc1n2C
c(n(C)c1c(=O)n(C)c(=O)n2C)nc21
c(n(C)c1c(=O)n(C)c(=O)n2C)nc12
c(n(C)c1c(=O)n(C)c(n2C)=O)nc21
c(n(C)c1c(=O)n(C)c(n2C)=O)nc12
c(n(C)c1c(n2C)=O)nc1n(c2=O)C
c(n(C)c1c(n2C)=O)nc1n(C)c2=O
c(n(C)c1c(n(c2=O)C)=O)nc1n2C
c(n(C)c1c(n(c(=O)n2C)C)=O)nc21
c(n(C)c1c(n(c(=O)n2C)C)=O)nc12
c(n(C)c1c(n(c(n2C)=O)C)=O)nc21
c(n(C)c1c(n(c(n2C)=O)C)=O)nc12
c(n(C)c1c(n(C)c2=O)=O)nc1n2C
c(n(C)c1c(n(C)c(=O)n2C)=O)nc21
c(n(C)c1c(n(C)c(=O)n2C)=O)nc12
c(n(C)c1c(n(C)c(n2C)=O)=O)nc21
c(n(C)c1c(n(C)c(n2C)=O)=O)nc12
c(n(C)c1c2n(c(n(c1=O)C)=O)C)n2
c(n(C)c1c2n(c(n(C)c1=O)=O)C)n2
c(n(C)c1c2n(c(=O)n(c1=O)C)C)n2
c(n(C)c1c2n(c(=O)n(C)c1=O)C)n2
c(n(C)c1c2n(C)c(n(c1=O)C)=O)n2
c(n(C)c1c2n(C)c(n(C)c1=O)=O)n2
c(n(C)c1c2n(C)c(=O)n(c1=O)C)n2
c(n(C)c1c2n(C)c(=O)n(C)c1=O)n2
c(n(C)c(c1n2C)c(=O)n(c2=O)C)n1
c(n(C)c(c1n2C)c(=O)n(C)c2=O)n1
c(n(C)c(c1n2C)c(n(c2=O)C)=O)n1
c(n(C)c(c1n2C)c(n(C)c2=O)=O)n1
c(n(C)c(c1n(c2=O)C)c(=O)n2C)n1
c(n(C)c(c1n(c2=O)C)c(n2C)=O)n1
c(n(C)c(c1n(c(n2C)=O)C)c2=O)n1
c(n(C)c(c1n(c(=O)n2C)C)c2=O)n1
c(n(C)c(c1n(C)c2=O)c(=O)n2C)n1
c(n(C)c(c1n(C)c2=O)c(n2C)=O)n1
c(n(C)c(c1n(C)c(n2C)=O)c2=O)n1
c(n(C)c(c1n(C)c(=O)n2C)c2=O)n1
c(n(C)c(c1=O)c2n(c(n1C)=O)C)n2
c(n(C)c(c1=O)c2n(c(=O)n1C)C)n2
c(n(C)c(c1=O)c2n(C)c(n1C)=O)n2
c(n(C)c(c1=O)c2n(C)c(=O)n1C)n2
c(n(C)c(c(=O)n1C)c2n(c1=O)C)n2
c(n(C)c(c(=O)n1C)c2n(C)c1=O)n2
c(n(C)c(c(=O)n(c1=O)C)c2n1C)n2
c(n(C)c(c(=O)n(C)c1=O)c2n1C)n2
c(n(C)c(c(n1C)=O)c2n(c1=O)C)n2
c(n(C)c(c(n1C)=O)c2n(C)c1=O)n2
c(n(C)c(c(n(c1=O)C)=O)c2n1C)n2
c(n(C)c(c(n(C)c1=O)=O)c2n1C)n2
c(n(c1c2=O)C)nc1n(c(n2C)=O)C
c(n(c1c2=O)C)nc1n(c(=O)n2C)C
c(n(c1c2=O)C)nc1n(C)c(n2C)=O
c(n(c1c2=O)C)nc1n(C)c(=O)n2C
c(n(c1c(=O)n2C)C)nc1n(c2=O)C
c(n(c1c(=O)n2C)C)nc1n(C)c2=O
c(n(c1c(=O)n(c2=O)C)C)nc1n2C
c(n(c1c(=O)n(c(=O)n2C)C)C)nc21
c(n(c1c(=O)n(c(=O)n2C)C)C)nc12
c(n(c1c(=O)n(c(n2C)=O)C)C)nc21
c(n(c1c(=O)n(c(n2C)=O)C)C)nc12
c(n(c1c(=O)n(C)c2=O)C)nc1n2C
c(n(c1c(=O)n(C)c(=O)n2C)C)nc21
c(n(c1c(=O)n(C)c(=O)n2C)C)nc12
c(n(c1c(=O)n(C)c(n2C)=O)C)nc21
c(n(c1c(=O)n(C)c(n2C)=O)C)nc12
c(n(c1c(n2C)=O)C)nc1n(c2=O)C
c(n(c1c(n2C)=O)C)nc1n(C)c2=O
c(n(c1c(n(c2=O)C)=O)C)nc1n2C
c(n(c1c(n(c(=O)n2C)C)=O)C)nc21
c(n(c1c(n(c(=O)n2C)C)=O)C)nc12
c(n(c1c(n(c(n2C)=O)C)=O)C)nc21
c(n(c1c(n(c(n2C)=O)C)=O)C)nc12
c(n(c1c(n(C)c2=O)=O)C)nc1n2C
c(n(c1c(n(C)c(=O)n2C)=O)C)nc21
c(n(c1c(n(C)c(=O)n2C)=O)C)nc12
c(n(c1c(n(C)c(n2C)=O)=O)C)nc21
c(n(c1c(n(C)c(n2C)=O)=O)C)nc12
c(n(c1c2n(c(n(c1=O)C)=O)C)C)n2
c(n(c1c2n(c(n(C)c1=O)=O)C)C)n2
c(n(c1c2n(c(=O)n(c1=O)C)C)C)n2
c(n(c1c2n(c(=O)n(C)c1=O)C)C)n2
c(n(c1c2n(C)c(n(c1=O)C)=O)C)n2
c(n(c1c2n(C)c(n(C)c1=O)=O)C)n2
c(n(c1c2n(C)c(=O)n(c1=O)C)C)n2
c(n(c1c2n(C)c(=O)n(C)c1=O)C)n2
c(n(c(c1n2C)c(=O)n(c2=O)C)C)n1
c(n(c(c1n2C)c(=O)n(C)c2=O)C)n1
c(n(c(c1n2C)c(n(c2=O)C)=O)C)n1
c(n(c(c1n2C)c(n(C)c2=O)=O)C)n1
c(n(c(c1n(c2=O)C)c(=O)n2C)C)n1
c(n(c(c1n(c2=O)C)c(n2C)=O)C)n1
c(n(c(c1n(c(n2C)=O)C)c2=O)C)n1
c(n(c(c1n(c(=O)n2C)C)c2=O)C)n1
c(n(c(c1n(C)c2=O)c(=O)n2C)C)n1
c(n(c(c1n(C)c2=O)c(n2C)=O)C)n1
c(n(c(c1n(C)c(n2C)=O)c2=O)C)n1
c(n(c(c1n(C)c(=O)n2C)c2=O)C)n1
c(n(c(c1=O)c2n(c(n1C)=O)C)C)n2
c(n(c(c1=O)c2n(c(=O)n1C)C)C)n2
c(n(c(c1=O)c2n(C)c(n1C)=O)C)n2
c(n(c(c1=O)c2n(C)c(=O)n1C)C)n2
c(n(c(c(=O)n1C)c2n(c1=O)C)C)n2
c(n(c(c(=O)n1C)c2n(C)c1=O)C)n2
c(n(c(c(=O)n(c1=O)C)c2n1C)C)n2
c(n(c(c(=O)n(C)c1=O)c2n1C)C)n2
c(n(c(c(n1C)=O)c2n(c1=O)C)C)n2
c(n(c(c(n1C)=O)c2n(C)c1=O)C)n2
c(n(c(c(n(c1=O)C)=O)c2n1C)C)n2
c(n(c(c(n(C)c1=O)=O)c2n1C)C)n2
c(nc1c2c(=O)n(c(=O)n1C)C)n2C
c(nc1c2c(=O)n(c(n1C)=O)C)n2C
c(nc1c2c(=O)n(C)c(=O)n1C)n2C
c(nc1c2c(=O)n(C)c(n1C)=O)n2C
c(nc1c2c(n(c(=O)n1C)C)=O)n2C
c(nc1c2c(n(c(n1C)=O)C)=O)n2C
c(nc1c2c(n(C)c(=O)n1C)=O)n2C
c(nc1c2c(n(C)c(n1C)=O)=O)n2C
c(nc1n2C)n(C)c1c(=O)n(c2=O)C
c(nc1n2C)n(C)c1c(=O)n(C)c2=O
c(nc1n2C)n(C)c1c(n(c2=O)C)=O
c(nc1n2C)n(C)c1c(n(C)c2=O)=O
c(nc1n2C)n(c1c(=O)n(c2=O)C)C
c(nc1n2C)n(c1c(=O)n(C)c2=O)C
c(nc1n2C)n(c1c(n(c2=O)C)=O)C
c(nc1n2C)n(c1c(n(C)c2=O)=O)C
c(nc1n(c2=O)C)n(C)c1c(=O)n2C
c(nc1n(c2=O)C)n(C)c1c(n2C)=O
c(nc1n(c2=O)C)n(c1c(=O)n2C)C
c(nc1n(c2=O)C)n(c1c(n2C)=O)C
c(nc1n(c(n2C)=O)C)n(C)c1c2=O
c(nc1n(c(n2C)=O)C)n(c1c2=O)C
c(nc1n(c(n(c2=O)C)=O)C)n(C)c12
c(nc1n(c(n(c2=O)C)=O)C)n(C)c21
c(nc1n(c(n(c2=O)C)=O)C)n(c12)C
c(nc1n(c(n(c2=O)C)=O)C)n(c21)C
c(nc1n(c(n(C)c2=O)=O)C)n(C)c12
c(nc1n(c(n(C)c2=O)=O)C)n(C)c21
c(nc1n(c(n(C)c2=O)=O)C)n(c12)C
c(nc1n(c(n(C)c2=O)=O)C)n(c21)C
c(nc1n(c(=O)n2C)C)n(C)c1c2=O
c(nc1n(c(=O)n2C)C)n(c1c2=O)C
c(nc1n(c(=O)n(c2=O)C)C)n(C)c12
c(nc1n(c(=O)n(c2=O)C)C)n(C)c21
c(nc1n(c(=O)n(c2=O)C)C)n(c12)C
c(nc1n(c(=O)n(c2=O)C)C)n(c21)C
c(nc1n(c(=O)n(C)c2=O)C)n(C)c12
c(nc1n(c(=O)n(C)c2=O)C)n(C)c21
c(nc1n(c(=O)n(C)c2=O)C)n(c12)C
c(nc1n(c(=O)n(C)c2=O)C)n(c21)C
c(nc1n(C)c2=O)n(C)c1c(=O)n2C
c(nc1n(C)c2=O)n(C)c1c(n2C)=O
c(nc1n(C)c2=O)n(c1c(=O)n2C)C
c(nc1n(C)c2=O)n(c1c(n2C)=O)C
c(nc1n(C)c(n2C)=O)n(C)c1c2=O
c(nc1n(C)c(n2C)=O)n(c1c2=O)C
c(nc1n(C)c(n(c2=O)C)=O)n(C)c12
c(nc1n(C)c(n(c2=O)C)=O)n(C)c21
c(nc1n(C)c(n(c2=O)C)=O)n(c12)C
c(nc1n(C)c(n(c2=O)C)=O)n(c21)C
c(nc1n(C)c(n(C)c2=O)=O)n(C)c12
c(nc1n(C)c(n(C)c2=O)=O)n(C)c21
c(nc1n(C)c(n(C)c2=O)=O)n(c12)C
c(nc1n(C)c(n(C)c2=O)=O)n(c21)C
c(nc1n(C)c(=O)n2C)n(C)c1c2=O
c(nc1n(C)c(=O)n2C)n(c1c2=O)C
c(nc1n(C)c(=O)n(c2=O)C)n(C)c12
c(nc1n(C)c(=O)n(c2=O)C)n(C)c21
c(nc1n(C)c(=O)n(c2=O)C)n(c12)C
c(nc1n(C)c(=O)n(c2=O)C)n(c21)C
c(nc1n(C)c(=O)n(C)c2=O)n(C)c12
c(nc1n(C)c(=O)n(C)c2=O)n(C)c21
c(nc1n(C)c(=O)n(C)c2=O)n(c12)C
c(nc1n(C)c(=O)n(C)c2=O)n(c21)C
c(nc(n1C)c2c(=O)n(c1=O)C)n2C
c(nc(n1C)c2c(=O)n(C)c1=O)n2C
c(nc(n1C)c2c(n(c1=O)C)=O)n2C
c(nc(n1C)c2c(n(C)c1=O)=O)n2C
c(nc(n(c1=O)C)c2c(=O)n1C)n2C
c(nc(n(c1=O)C)c2c(n1C)=O)n2C
c(nc(n(c(n1C)=O)C)c2c1=O)n2C
c(nc(n(c(=O)n1C)C)c2c1=O)n2C
c(nc(n(C)c1=O)c2c(=O)n1C)n2C
c(nc(n(C)c1=O)c2c(n1C)=O)n2C
c(nc(n(C)c(n1C)=O)c2c1=O)n2C
c(nc(n(C)c(=O)n1C)c2c1=O)n2C
c(nc(c1c2=O)n(c(n2C)=O)C)n1C
c(nc(c1c2=O)n(c(=O)n2C)C)n1C
c(nc(c1c2=O)n(C)c(n2C)=O)n1C
c(nc(c1c2=O)n(C)c(=O)n2C)n1C
c(nc(c1c(=O)n2C)n(c2=O)C)n1C
c(nc(c1c(=O)n2C)n(C)c2=O)n1C
c(nc(c1c(=O)n(c2=O)C)n2C)n1C
c(nc(c1c(=O)n(C)c2=O)n2C)n1C
c(nc(c1c(n2C)=O)n(c2=O)C)n1C
c(nc(c1c(n2C)=O)n(C)c2=O)n1C
c(nc(c1c(n(c2=O)C)=O)n2C)n1C
c(nc(c1c(n(C)c2=O)=O)n2C)n1C
n1c2c(n(C)c1)c(=O)n(c(=O)n2C)C
n1c2c(n(C)c1)c(=O)n(c(n2C)=O)C
n1c2c(n(C)c1)c(=O)n(C)c(=O)n2C
n1c2c(n(C)c1)c(=O)n(C)c(n2C)=O
n1c2c(n(C)c1)c(n(c(=O)n2C)C)=O
n1c2c(n(C)c1)c(n(c(n2C)=O)C)=O
n1c2c(n(C)c1)c(n(C)c(=O)n2C)=O
n1c2c(n(C)c1)c(n(C)c(n2C)=O)=O
n1c2c(n(c1)C)c(=O)n(c(=O)n2C)C
n1c2c(n(c1)C)c(=O)n(c(n2C)=O)C
n1c2c(n(c1)C)c(=O)n(C)c(=O)n2C
n1c2c(n(c1)C)c(=O)n(C)c(n2C)=O
n1c2c(n(c1)C)c(n(c(=O)n2C)C)=O
n1c2c(n(c1)C)c(n(c(n2C)=O)C)=O
n1c2c(n(c1)C)c(n(C)c(=O)n2C)=O
n1c2c(n(c1)C)c(n(C)c(n2C)=O)=O
n1c2c(c(=O)n(c(=O)n2C)C)n(C)c1
n1c2c(c(=O)n(c(=O)n2C)C)n(c1)C
n1c2c(c(=O)n(c(n2C)=O)C)n(C)c1
n1c2c(c(=O)n(c(n2C)=O)C)n(c1)C
n1c2c(c(=O)n(C)c(=O)n2C)n(C)c1
n1c2c(c(=O)n(C)c(=O)n2C)n(c1)C
n1c2c(c(=O)n(C)c(n2C)=O)n(C)c1
n1c2c(c(=O)n(C)c(n2C)=O)n(c1)C
n1c2c(c(n(c(=O)n2C)C)=O)n(C)c1
n1c2c(c(n(c(=O)n2C)C)=O)n(c1)C
n1c2c(c(n(c(n2C)=O)C)=O)n(C)c1
n1c2c(c(n(c(n2C)=O)C)=O)n(c1)C
n1c2c(c(n(C)c(=O)n2C)=O)n(C)c1
n1c2c(c(n(C)c(=O)n2C)=O)n(c1)C
n1c2c(c(n(C)c(n2C)=O)=O)n(C)c1
n1c2c(c(n(C)c(n2C)=O)=O)n(c1)C
n1c2n(c(n(c(c2n(C)c1)=O)C)=O)C
n1c2n(c(n(c(c2n(c1)C)=O)C)=O)C
n1c2n(c(n(c(=O)c2n(C)c1)C)=O)C
n1c2n(c(n(c(=O)c2n(c1)C)C)=O)C
n1c2n(c(n(C)c(c2n(C)c1)=O)=O)C
n1c2n(c(n(C)c(c2n(c1)C)=O)=O)C
n1c2n(c(n(C)c(=O)c2n(C)c1)=O)C
n1c2n(c(n(C)c(=O)c2n(c1)C)=O)C
n1c2n(c(=O)n(c(c2n(C)c1)=O)C)C
n1c2n(c(=O)n(c(c2n(c1)C)=O)C)C
n1c2n(c(=O)n(c(=O)c2n(C)c1)C)C
n1c2n(c(=O)n(c(=O)c2n(c1)C)C)C
n1c2n(c(=O)n(C)c(c2n(C)c1)=O)C
n1c2n(c(=O)n(C)c(c2n(c1)C)=O)C
n1c2n(c(=O)n(C)c(=O)c2n(C)c1)C
n1c2n(c(=O)n(C)c(=O)c2n(c1)C)C
n1c2n(C)c(n(c(c2n(C)c1)=O)C)=O
n1c2n(C)c(n(c(c2n(c1)C)=O)C)=O
n1c2n(C)c(n(c(=O)c2n(C)c1)C)=O
n1c2n(C)c(n(c(=O)c2n(c1)C)C)=O
n1c2n(C)c(n(C)c(c2n(C)c1)=O)=O
n1c2n(C)c(n(C)c(c2n(c1)C)=O)=O
n1c2n(C)c(n(C)c(=O)c2n(C)c1)=O
n1c2n(C)c(n(C)c(=O)c2n(c1)C)=O
n1c2n(C)c(=O)n(c(c2n(C)c1)=O)C
n1c2n(C)c(=O)n(c(c2n(c1)C)=O)C
n1c2n(C)c(=O)n(c(=O)c2n(C)c1)C
n1c2n(C)c(=O)n(c(=O)c2n(c1)C)C
n1c2n(C)c(=O)n(C)c(c2n(C)c1)=O
n1c2n(C)c(=O)n(C)c(c2n(c1)C)=O
n1c2n(C)c(=O)n(C)c(=O)c2n(C)c1
n1c2n(C)c(=O)n(C)c(=O)c2n(c1)C
n1c(n2C)c(n(C)c1)c(=O)n(c2=O)C
n1c(n2C)c(n(C)c1)c(=O)n(C)c2=O
n1c(n2C)c(n(C)c1)c(n(c2=O)C)=O
n1c(n2C)c(n(C)c1)c(n(C)c2=O)=O
n1c(n2C)c(n(c1)C)c(=O)n(c2=O)C
n1c(n2C)c(n(c1)C)c(=O)n(C)c2=O
n1c(n2C)c(n(c1)C)c(n(c2=O)C)=O
n1c(n2C)c(n(c1)C)c(n(C)c2=O)=O
n1c(n2C)c(c(=O)n(c2=O)C)n(C)c1
n1c(n2C)c(c(=O)n(c2=O)C)n(c1)C
n1c(n2C)c(c(=O)n(C)c2=O)n(C)c1
n1c(n2C)c(c(=O)n(C)c2=O)n(c1)C
n1c(n2C)c(c(n(c2=O)C)=O)n(C)c1
n1c(n2C)c(c(n(c2=O)C)=O)n(c1)C
n1c(n2C)c(c(n(C)c2=O)=O)n(C)c1
n1c(n2C)c(c(n(C)c2=O)=O)n(c1)C
n1c(n(c2=O)C)c(n(C)c1)c(=O)n2C
n1c(n(c2=O)C)c(n(C)c1)c(n2C)=O
n1c(n(c2=O)C)c(n(c1)C)c(=O)n2C
n1c(n(c2=O)C)c(n(c1)C)c(n2C)=O
n1c(n(c2=O)C)c(c(=O)n2C)n(C)c1
n1c(n(c2=O)C)c(c(=O)n2C)n(c1)C
n1c(n(c2=O)C)c(c(n2C)=O)n(C)c1
n1c(n(c2=O)C)c(c(n2C)=O)n(c1)C
n1c(n(c(n2C)=O)C)c(n(C)c1)c2=O
n1c(n(c(n2C)=O)C)c(n(c1)C)c2=O
n1c(n(c(n2C)=O)C)c(c2=O)n(C)c1
n1c(n(c(n2C)=O)C)c(c2=O)n(c1)C
n1c(n(c(n(c2=O)C)=O)C)c2n(C)c1
n1c(n(c(n(c2=O)C)=O)C)c2n(c1)C
n1c(n(c(n(C)c2=O)=O)C)c2n(C)c1
n1c(n(c(n(C)c2=O)=O)C)c2n(c1)C
n1c(n(c(=O)n2C)C)c(n(C)c1)c2=O
n1c(n(c(=O)n2C)C)c(n(c1)C)c2=O
n1c(n(c(=O)n2C)C)c(c2=O)n(C)c1
n1c(n(c(=O)n2C)C)c(c2=O)n(c1)C
n1c(n(c(=O)n(c2=O)C)C)c2n(C)c1
n1c(n(c(=O)n(c2=O)C)C)c2n(c1)C
n1c(n(c(=O)n(C)c2=O)C)c2n(C)c1
n1c(n(c(=O)n(C)c2=O)C)c2n(c1)C
n1c(n(C)c2=O)c(n(C)c1)c(=O)n2C
n1c(n(C)c2=O)c(n(C)c1)c(n2C)=O
n1c(n(C)c2=O)c(n(c1)C)c(=O)n2C
n1c(n(C)c2=O)c(n(c1)C)c(n2C)=O
n1c(n(C)c2=O)c(c(=O)n2C)n(C)c1
n1c(n(C)c2=O)c(c(=O)n2C)n(c1)C
n1c(n(C)c2=O)c(c(n2C)=O)n(C)c1
n1c(n(C)c2=O)c(c(n2C)=O)n(c1)C
n1c(n(C)c(n2C)=O)c(n(C)c1)c2=O
n1c(n(C)c(n2C)=O)c(n(c1)C)c2=O
n1c(n(C)c(n2C)=O)c(c2=O)n(C)c1
n1c(n(C)c(n2C)=O)c(c2=O)n(c1)C
n1c(n(C)c(n(c2=O)C)=O)c2n(C)c1
n1c(n(C)c(n(c2=O)C)=O)c2n(c1)C
n1c(n(C)c(n(C)c2=O)=O)c2n(C)c1
n1c(n(C)c(n(C)c2=O)=O)c2n(c1)C
n1c(n(C)c(=O)n2C)c(n(C)c1)c2=O
n1c(n(C)c(=O)n2C)c(n(c1)C)c2=O
n1c(n(C)c(=O)n2C)c(c2=O)n(C)c1
n1c(n(C)c(=O)n2C)c(c2=O)n(c1)C
n1c(n(C)c(=O)n(c2=O)C)c2n(C)c1
n1c(n(C)c(=O)n(c2=O)C)c2n(c1)C
n1c(n(C)c(=O)n(C)c2=O)c2n(C)c1
n1c(n(C)c(=O)n(C)c2=O)c2n(c1)C
n1c(c2n(C)c1)n(c(n(c2=O)C)=O)C
n1c(c2n(C)c1)n(c(n(C)c2=O)=O)C
n1c(c2n(C)c1)n(c(=O)n(c2=O)C)C
n1c(c2n(C)c1)n(c(=O)n(C)c2=O)C
n1c(c2n(C)c1)n(C)c(n(c2=O)C)=O
n1c(c2n(C)c1)n(C)c(n(C)c2=O)=O
n1c(c2n(C)c1)n(C)c(=O)n(c2=O)C
n1c(c2n(C)c1)n(C)c(=O)n(C)c2=O
n1c(c2n(c1)C)n(c(n(c2=O)C)=O)C
n1c(c2n(c1)C)n(c(n(C)c2=O)=O)C
n1c(c2n(c1)C)n(c(=O)n(c2=O)C)C
n1c(c2n(c1)C)n(c(=O)n(C)c2=O)C
n1c(c2n(c1)C)n(C)c(n(c2=O)C)=O
n1c(c2n(c1)C)n(C)c(n(C)c2=O)=O
n1c(c2n(c1)C)n(C)c(=O)n(c2=O)C
n1c(c2n(c1)C)n(C)c(=O)n(C)c2=O
n1c(c(n(C)c1)c2=O)n(c(n2C)=O)C
n1c(c(n(C)c1)c2=O)n(c(=O)n2C)C
n1c(c(n(C)c1)c2=O)n(C)c(n2C)=O
n1c(c(n(C)c1)c2=O)n(C)c(=O)n2C
n1c(c(n(C)c1)c(=O)n2C)n(c2=O)C
n1c(c(n(C)c1)c(=O)n2C)n(C)c2=O
n1c(c(n(C)c1)c(=O)n(c2=O)C)n2C
n1c(c(n(C)c1)c(=O)n(C)c2=O)n2C
n1c(c(n(C)c1)c(n2C)=O)n(c2=O)C
n1c(c(n(C)c1)c(n2C)=O)n(C)c2=O
n1c(c(n(C)c1)c(n(c2=O)C)=O)n2C
n1c(c(n(C)c1)c(n(C)c2=O)=O)n2C
n1c(c(n(c1)C)c2=O)n(c(n2C)=O)C
n1c(c(n(c1)C)c2=O)n(c(=O)n2C)C
n1c(c(n(c1)C)c2=O)n(C)c(n2C)=O
n1c(c(n(c1)C)c2=O)n(C)c(=O)n2C
n1c(c(n(c1)C)c(=O)n2C)n(c2=O)C
n1c(c(n(c1)C)c(=O)n2C)n(C)c2=O
n1c(c(n(c1)C)c(=O)n(c2=O)C)n2C
n1c(c(n(c1)C)c(=O)n(C)c2=O)n2C
n1c(c(n(c1)C)c(n2C)=O)n(c2=O)C
n1c(c(n(c1)C)c(n2C)=O)n(C)c2=O
n1c(c(n(c1)C)c(n(c2=O)C)=O)n2C
n1c(c(n(c1)C)c(n(C)c2=O)=O)n2C
n1c(c(c2=O)n(C)c1)n(c(n2C)=O)C
n1c(c(c2=O)n(C)c1)n(c(=O)n2C)C
n1c(c(c2=O)n(C)c1)n(C)c(n2C)=O
n1c(c(c2=O)n(C)c1)n(C)c(=O)n2C
n1c(c(c2=O)n(c1)C)n(c(n2C)=O)C
n1c(c(c2=O)n(c1)C)n(c(=O)n2C)C
n1c(c(c2=O)n(c1)C)n(C)c(n2C)=O
n1c(c(c2=O)n(c1)C)n(C)c(=O)n2C
n1c(c(c(=O)n2C)n(C)c1)n(c2=O)C
n1c(c(c(=O)n2C)n(C)c1)n(C)c2=O
n1c(c(c(=O)n2C)n(c1)C)n(c2=O)C
n1c(c(c(=O)n2C)n(c1)C)n(C)c2=O
n1c(c(c(=O)n(c2=O)C)n(C)c1)n2C
n1c(c(c(=O)n(c2=O)C)n(c1)C)n2C
n1c(c(c(=O)n(C)c2=O)n(C)c1)n2C
n1c(c(c(=O)n(C)c2=O)n(c1)C)n2C
n1c(c(c(n2C)=O)n(C)c1)n(c2=O)C
n1c(c(c(n2C)=O)n(C)c1)n(C)c2=O
n1c(c(c(n2C)=O)n(c1)C)n(c2=O)C
n1c(c(c(n2C)=O)n(c1)C)n(C)c2=O
n1c(c(c(n(c2=O)C)=O)n(C)c1)n2C
n1c(c(c(n(c2=O)C)=O)n(c1)C)n2C
n1c(c(c(n(C)c2=O)=O)n(C)c1)n2C
n1c(c(c(n(C)c2=O)=O)n(c1)C)n2C
n1cn(C)c2c(=O)n(c(=O)n(c12)C)C
n1cn(C)c2c(=O)n(c(=O)n(c21)C)C
n1cn(C)c2c(=O)n(c(=O)n(C)c12)C
n1cn(C)c2c(=O)n(c(=O)n(C)c21)C
n1cn(C)c2c(=O)n(c(n(c12)C)=O)C
n1cn(C)c2c(=O)n(c(n(c21)C)=O)C
n1cn(C)c2c(=O)n(c(n(C)c12)=O)C
n1cn(C)c2c(=O)n(c(n(C)c21)=O)C
n1cn(C)c2c(=O)n(C)c(=O)n(c12)C
n1cn(C)c2c(=O)n(C)c(=O)n(c21)C
n1cn(C)c2c(=O)n(C)c(=O)n(C)c12
n1cn(C)c2c(=O)n(C)c(=O)n(C)c21
n1cn(C)c2c(=O)n(C)c(n(c12)C)=O
n1cn(C)c2c(=O)n(C)c(n(c21)C)=O
n1cn(C)c2c(=O)n(C)c(n(C)c12)=O
n1cn(C)c2c(=O)n(C)c(n(C)c21)=O
n1cn(C)c2c(n(c(=O)n(c12)C)C)=O
n1cn(C)c2c(n(c(=O)n(c21)C)C)=O
n1cn(C)c2c(n(c(=O)n(C)c12)C)=O
n1cn(C)c2c(n(c(=O)n(C)c21)C)=O
n1cn(C)c2c(n(c(n(c12)C)=O)C)=O
n1cn(C)c2c(n(c(n(c21)C)=O)C)=O
n1cn(C)c2c(n(c(n(C)c12)=O)C)=O
n1cn(C)c2c(n(c(n(C)c21)=O)C)=O
n1cn(C)c2c(n(C)c(=O)n(c12)C)=O
n1cn(C)c2c(n(C)c(=O)n(c21)C)=O
n1cn(C)c2c(n(C)c(=O)n(C)c12)=O
n1cn(C)c2c(n(C)c(=O)n(C)c21)=O
n1cn(C)c2c(n(C)c(n(c12)C)=O)=O
n1cn(C)c2c(n(C)c(n(c21)C)=O)=O
n1cn(C)c2c(n(C)c(n(C)c12)=O)=O
n1cn(C)c2c(n(C)c(n(C)c21)=O)=O
n1cn(C)c2c1n(c(n(c2=O)C)=O)C
n1cn(C)c2c1n(c(n(C)c2=O)=O)C
n1cn(C)c2c1n(c(=O)n(c2=O)C)C
n1cn(C)c2c1n(c(=O)n(C)c2=O)C
n1cn(C)c2c1n(C)c(n(c2=O)C)=O
n1cn(C)c2c1n(C)c(n(C)c2=O)=O
n1cn(C)c2c1n(C)c(=O)n(c2=O)C
n1cn(C)c2c1n(C)c(=O)n(C)c2=O
n1cn(C)c(c1n2C)c(=O)n(c2=O)C
n1cn(C)c(c1n2C)c(=O)n(C)c2=O
n1cn(C)c(c1n2C)c(n(c2=O)C)=O
n1cn(C)c(c1n2C)c(n(C)c2=O)=O
n1cn(C)c(c1n(c2=O)C)c(=O)n2C
n1cn(C)c(c1n(c2=O)C)c(n2C)=O
n1cn(C)c(c1n(c(n2C)=O)C)c2=O
n1cn(C)c(c1n(c(=O)n2C)C)c2=O
n1cn(C)c(c1n(C)c2=O)c(=O)n2C
n1cn(C)c(c1n(C)c2=O)c(n2C)=O
n1cn(C)c(c1n(C)c(n2C)=O)c2=O
n1cn(C)c(c1n(C)c(=O)n2C)c2=O
n1cn(C)c(c2=O)c1n(c(n2C)=O)C
n1cn(C)c(c2=O)c1n(c(=O)n2C)C
n1cn(C)c(c2=O)c1n(C)c(n2C)=O
n1cn(C)c(c2=O)c1n(C)c(=O)n2C
n1cn(C)c(c(=O)n2C)c1n(c2=O)C
n1cn(C)c(c(=O)n2C)c1n(C)c2=O
n1cn(C)c(c(=O)n(c2=O)C)c1n2C
n1cn(C)c(c(=O)n(c(=O)n2C)C)c12
n1cn(C)c(c(=O)n(c(=O)n2C)C)c21
n1cn(C)c(c(=O)n(c(n2C)=O)C)c12
n1cn(C)c(c(=O)n(c(n2C)=O)C)c21
n1cn(C)c(c(=O)n(C)c2=O)c1n2C
n1cn(C)c(c(=O)n(C)c(=O)n2C)c12
n1cn(C)c(c(=O)n(C)c(=O)n2C)c21
n1cn(C)c(c(=O)n(C)c(n2C)=O)c12
n1cn(C)c(c(=O)n(C)c(n2C)=O)c21
n1cn(C)c(c(n2C)=O)c1n(c2=O)C
n1cn(C)c(c(n2C)=O)c1n(C)c2=O
n1cn(C)c(c(n(c2=O)C)=O)c1n2C
n1cn(C)c(c(n(c(=O)n2C)C)=O)c12
n1cn(C)c(c(n(c(=O)n2C)C)=O)c21
n1cn(C)c(c(n(c(n2C)=O)C)=O)c12
n1cn(C)c(c(n(c(n2C)=O)C)=O)c21
n1cn(C)c(c(n(C)c2=O)=O)c1n2C
n1cn(C)c(c(n(C)c(=O)n2C)=O)c12
n1cn(C)c(c(n(C)c(=O)n2C)=O)c21
n1cn(C)c(c(n(C)c(n2C)=O)=O)c12
n1cn(C)c(c(n(C)c(n2C)=O)=O)c21
n1cn(c2c(=O)n(c(=O)n(c12)C)C)C
n1cn(c2c(=O)n(c(=O)n(c21)C)C)C
n1cn(c2c(=O)n(c(=O)n(C)c12)C)C
n1cn(c2c(=O)n(c(=O)n(C)c21)C)C
n1cn(c2c(=O)n(c(n(c12)C)=O)C)C
n1cn(c2c(=O)n(c(n(c21)C)=O)C)C
n1cn(c2c(=O)n(c(n(C)c12)=O)C)C
n1cn(c2c(=O)n(c(n(C)c21)=O)C)C
n1cn(c2c(=O)n(C)c(=O)n(c12)C)C
n1cn(c2c(=O)n(C)c(=O)n(c21)C)C
n1cn(c2c(=O)n(C)c(=O)n(C)c12)C
n1cn(c2c(=O)n(C)c(=O)n(C)c21)C
n1cn(c2c(=O)n(C)c(n(c12)C)=O)C
n1cn(c2c(=O)n(C)c(n(c21)C)=O)C
n1cn(c2c(=O)n(C)c(n(C)c12)=O)C
n1cn(c2c(=O)n(C)c(n(C)c21)=O)C
n1cn(c2c(n(c(=O)n(c12)C)C)=O)C
n1cn(c2c(n(c(=O)n(c21)C)C)=O)C
n1cn(c2c(n(c(=O)n(C)c12)C)=O)C
n1cn(c2c(n(c(=O)n(C)c21)C)=O)C
n1cn(c2c(n(c(n(c12)C)=O)C)=O)C
n1cn(c2c(n(c(n(c21)C)=O)C)=O)C
n1cn(c2c(n(c(n(C)c12)=O)C)=O)C
n1cn(c2c(n(c(n(C)c21)=O)C)=O)C
n1cn(c2c(n(C)c(=O)n(c12)C)=O)C
n1cn(c2c(n(C)c(=O)n(c21)C)=O)C
n1cn(c2c(n(C)c(=O)n(C)c12)=O)C
n1cn(c2c(n(C)c(=O)n(C)c21)=O)C
n1cn(c2c(n(C)c(n(c12)C)=O)=O)C
n1cn(c2c(n(C)c(n(c21)C)=O)=O)C
n1cn(c2c(n(C)c(n(C)c12)=O)=O)C
n1cn(c2c(n(C)c(n(C)c21)=O)=O)C
n1cn(c2c1n(c(n(c2=O)C)=O)C)C
n1cn(c2c1n(c(n(C)c2=O)=O)C)C
n1cn(c2c1n(c(=O)n(c2=O)C)C)C
n1cn(c2c1n(c(=O)n(C)c2=O)C)C
n1cn(c2c1n(C)c(n(c2=O)C)=O)C
n1cn(c2c1n(C)c(n(C)c2=O)=O)C
n1cn(c2c1n(C)c(=O)n(c2=O)C)C
n1cn(c2c1n(C)c(=O)n(C)c2=O)C
n1cn(c(c1n2C)c(=O)n(c2=O)C)C
n1cn(c(c1n2C)c(=O)n(C)c2=O)C
n1cn(c(c1n2C)c(n(c2=O)C)=O)C
n1cn(c(c1n2C)c(n(C)c2=O)=O)C
n1cn(c(c1n(c2=O)C)c(=O)n2C)C
n1cn(c(c1n(c2=O)C)c(n2C)=O)C
n1cn(c(c1n(c(n2C)=O)C)c2=O)C
n1cn(c(c1n(c(=O)n2C)C)c2=O)C
n1cn(c(c1n(C)c2=O)c(=O)n2C)C
n1cn(c(c1n(C)c2=O)c(n2C)=O)C
n1cn(c(c1n(C)c(n2C)=O)c2=O)C
n1cn(c(c1n(C)c(=O)n2C)c2=O)C
n1cn(c(c2=O)c1n(c(n2C)=O)C)C
n1cn(c(c2=O)c1n(c(=O)n2C)C)C
n1cn(c(c2=O)c1n(C)c(n2C)=O)C
n1cn(c(c2=O)c1n(C)c(=O)n2C)C
n1cn(c(c(=O)n2C)c1n(c2=O)C)C
n1cn(c(c(=O)n2C)c1n(C)c2=O)C
n1cn(c(c(=O)n(c2=O)C)c1n2C)C
n1cn(c(c(=O)n(c(=O)n2C)C)c12)C
n1cn(c(c(=O)n(c(=O)n2C)C)c21)C
n1cn(c(c(=O)n(c(n2C)=O)C)c12)C
n1cn(c(c(=O)n(c(n2C)=O)C)c21)C
n1cn(c(c(=O)n(C)c2=O)c1n2C)C
n1cn(c(c(=O)n(C)c(=O)n2C)c12)C
n1cn(c(c(=O)n(C)c(=O)n2C)c21)C
n1cn(c(c(=O)n(C)c(n2C)=O)c12)C
n1cn(c(c(=O)n(C)c(n2C)=O)c21)C
n1cn(c(c(n2C)=O)c1n(c2=O)C)C
n1cn(c(c(n2C)=O)c1n(C)c2=O)C
n1cn(c(c(n(c2=O)C)=O)c1n2C)C
n1cn(c(c(n(c(=O)n2C)C)=O)c12)C
n1cn(c(c(n(c(=O)n2C)C)=O)c21)C
n1cn(c(c(n(c(n2C)=O)C)=O)c12)C
n1cn(c(c(n(c(n2C)=O)C)=O)c21)C
n1cn(c(c(n(C)c2=O)=O)c1n2C)C
n1cn(c(c(n(C)c(=O)n2C)=O)c12)C
n1cn(c(c(n(C)c(=O)n2C)=O)c21)C
n1cn(c(c(n(C)c(n2C)=O)=O)c12)C
n1cn(c(c(n(C)c(n2C)=O)=O)c21)C
n(cn1C)c2c1c(=O)n(c(=O)n2C)C
n(cn1C)c2c1c(=O)n(c(n2C)=O)C
n(cn1C)c2c1c(=O)n(C)c(=O)n2C
n(cn1C)c2c1c(=O)n(C)c(n2C)=O
n(cn1C)c2c1c(n(c(=O)n2C)C)=O
n(cn1C)c2c1c(n(c(n2C)=O)C)=O
n(cn1C)c2c1c(n(C)c(=O)n2C)=O
n(cn1C)c2c1c(n(C)c(n2C)=O)=O
n(cn1C)c2n(c(n(c(c12)=O)C)=O)C
n(cn1C)c2n(c(n(c(c21)=O)C)=O)C
n(cn1C)c2n(c(n(c(=O)c12)C)=O)C
n(cn1C)c2n(c(n(c(=O)c21)C)=O)C
n(cn1C)c2n(c(n(C)c(c12)=O)=O)C
n(cn1C)c2n(c(n(C)c(c21)=O)=O)C
n(cn1C)c2n(c(n(C)c(=O)c12)=O)C
n(cn1C)c2n(c(n(C)c(=O)c21)=O)C
n(cn1C)c2n(c(=O)n(c(c12)=O)C)C
n(cn1C)c2n(c(=O)n(c(c21)=O)C)C
n(cn1C)c2n(c(=O)n(c(=O)c12)C)C
n(cn1C)c2n(c(=O)n(c(=O)c21)C)C
n(cn1C)c2n(c(=O)n(C)c(c12)=O)C
n(cn1C)c2n(c(=O)n(C)c(c21)=O)C
n(cn1C)c2n(c(=O)n(C)c(=O)c12)C
n(cn1C)c2n(c(=O)n(C)c(=O)c21)C
n(cn1C)c2n(C)c(n(c(c12)=O)C)=O
n(cn1C)c2n(C)c(n(c(c21)=O)C)=O
n(cn1C)c2n(C)c(n(c(=O)c12)C)=O
n(cn1C)c2n(C)c(n(c(=O)c21)C)=O
n(cn1C)c2n(C)c(n(C)c(c12)=O)=O
n(cn1C)c2n(C)c(n(C)c(c21)=O)=O
n(cn1C)c2n(C)c(n(C)c(=O)c12)=O
n(cn1C)c2n(C)c(n(C)c(=O)c21)=O
n(cn1C)c2n(C)c(=O)n(c(c12)=O)C
n(cn1C)c2n(C)c(=O)n(c(c21)=O)C
n(cn1C)c2n(C)c(=O)n(c(=O)c12)C
n(cn1C)c2n(C)c(=O)n(c(=O)c21)C
n(cn1C)c2n(C)c(=O)n(C)c(c12)=O
n(cn1C)c2n(C)c(=O)n(C)c(c21)=O
n(cn1C)c2n(C)c(=O)n(C)c(=O)c12
n(cn1C)c2n(C)c(=O)n(C)c(=O)c21
n(cn1C)c(n2C)c1c(=O)n(c2=O)C
n(cn1C)c(n2C)c1c(=O)n(C)c2=O
n(cn1C)c(n2C)c1c(n(c2=O)C)=O
n(cn1C)c(n2C)c1c(n(C)c2=O)=O
n(cn1C)c(n(c2=O)C)c1c(=O)n2C
n(cn1C)c(n(c2=O)C)c1c(n2C)=O
n(cn1C)c(n(c(n2C)=O)C)c1c2=O
n(cn1C)c(n(c(n(c2=O)C)=O)C)c12
n(cn1C)c(n(c(n(c2=O)C)=O)C)c21
n(cn1C)c(n(c(n(C)c2=O)=O)C)c12
n(cn1C)c(n(c(n(C)c2=O)=O)C)c21
n(cn1C)c(n(c(=O)n2C)C)c1c2=O
n(cn1C)c(n(c(=O)n(c2=O)C)C)c12
n(cn1C)c(n(c(=O)n(c2=O)C)C)c21
n(cn1C)c(n(c(=O)n(C)c2=O)C)c12
n(cn1C)c(n(c(=O)n(C)c2=O)C)c21
n(cn1C)c(n(C)c2=O)c1c(=O)n2C
n(cn1C)c(n(C)c2=O)c1c(n2C)=O
n(cn1C)c(n(C)c(n2C)=O)c1c2=O
n(cn1C)c(n(C)c(n(c2=O)C)=O)c12
n(cn1C)c(n(C)c(n(c2=O)C)=O)c21
n(cn1C)c(n(C)c(n(C)c2=O)=O)c12
n(cn1C)c(n(C)c(n(C)c2=O)=O)c21
n(cn1C)c(n(C)c(=O)n2C)c1c2=O
n(cn1C)c(n(C)c(=O)n(c2=O)C)c12
n(cn1C)c(n(C)c(=O)n(c2=O)C)c21
n(cn1C)c(n(C)c(=O)n(C)c2=O)c12
n(cn1C)c(n(C)c(=O)n(C)c2=O)c21
n(cn1C)c(c1c2=O)n(c(n2C)=O)C
n(cn1C)c(c1c2=O)n(c(=O)n2C)C
n(cn1C)c(c1c2=O)n(C)c(n2C)=O
n(cn1C)c(c1c2=O)n(C)c(=O)n2C
n(cn1C)c(c1c(=O)n2C)n(c2=O)C
n(cn1C)c(c1c(=O)n2C)n(C)c2=O
n(cn1C)c(c1c(=O)n(c2=O)C)n2C
n(cn1C)c(c1c(=O)n(C)c2=O)n2C
n(cn1C)c(c1c(n2C)=O)n(c2=O)C
n(cn1C)c(c1c(n2C)=O)n(C)c2=O
n(cn1C)c(c1c(n(c2=O)C)=O)n2C
n(cn1C)c(c1c(n(C)c2=O)=O)n2C
n(cn(C)c1c2=O)c1n(c(n2C)=O)C
n(cn(C)c1c2=O)c1n(c(=O)n2C)C
n(cn(C)c1c2=O)c1n(C)c(n2C)=O
n(cn(C)c1c2=O)c1n(C)c(=O)n2C
n(cn(C)c1c(=O)n2C)c1n(c2=O)C
n(cn(C)c1c(=O)n2C)c1n(C)c2=O
n(cn(C)c1c(=O)n(c2=O)C)c1n2C
n(cn(C)c1c(=O)n(c(=O)n2C)C)c21
n(cn(C)c1c(=O)n(c(=O)n2C)C)c12
n(cn(C)c1c(=O)n(c(n2C)=O)C)c21
n(cn(C)c1c(=O)n(c(n2C)=O)C)c12
n(cn(C)c1c(=O)n(C)c2=O)c1n2C
n(cn(C)c1c(=O)n(C)c(=O)n2C)c21
n(cn(C)c1c(=O)n(C)c(=O)n2C)c12
n(cn(C)c1c(=O)n(C)c(n2C)=O)c21
n(cn(C)c1c(=O)n(C)c(n2C)=O)c12
n(cn(C)c1c(n2C)=O)c1n(c2=O)C
n(cn(C)c1c(n2C)=O)c1n(C)c2=O
n(cn(C)c1c(n(c2=O)C)=O)c1n2C
n(cn(C)c1c(n(c(=O)n2C)C)=O)c21
n(cn(C)c1c(n(c(=O)n2C)C)=O)c12
n(cn(C)c1c(n(c(n2C)=O)C)=O)c21
n(cn(C)c1c(n(c(n2C)=O)C)=O)c12
n(cn(C)c1c(n(C)c2=O)=O)c1n2C
n(cn(C)c1c(n(C)c(=O)n2C)=O)c21
n(cn(C)c1c(n(C)c(=O)n2C)=O)c12
n(cn(C)c1c(n(C)c(n2C)=O)=O)c21
n(cn(C)c1c(n(C)c(n2C)=O)=O)c12
n(cn(c1c2=O)C)c1n(c(n2C)=O)C
n(cn(c1c2=O)C)c1n(c(=O)n2C)C
n(cn(c1c2=O)C)c1n(C)c(n2C)=O
n(cn(c1c2=O)C)c1n(C)c(=O)n2C
n(cn(c1c(=O)n2C)C)c1n(c2=O)C
n(cn(c1c(=O)n2C)C)c1n(C)c2=O
n(cn(c1c(=O)n(c2=O)C)C)c1n2C
n(cn(c1c(=O)n(c(=O)n2C)C)C)c21
n(cn(c1c(=O)n(c(=O)n2C)C)C)c12
n(cn(c1c(=O)n(c(n2C)=O)C)C)c21
n(cn(c1c(=O)n(c(n2C)=O)C)C)c12
n(cn(c1c(=O)n(C)c2=O)C)c1n2C
n(cn(c1c(=O)n(C)c(=O)n2C)C)c21
n(cn(c1c(=O)n(C)c(=O)n2C)C)c12
n(cn(c1c(=O)n(C)c(n2C)=O)C)c21
n(cn(c1c(=O)n(C)c(n2C)=O)C)c12
n(cn(c1c(n2C)=O)C)c1n(c2=O)C
n(cn(c1c(n2C)=O)C)c1n(C)c2=O
n(cn(c1c(n(c2=O)C)=O)C)c1n2C
n(cn(c1c(n(c(=O)n2C)C)=O)C)c21
n(cn(c1c(n(c(=O)n2C)C)=O)C)c12
n(cn(c1c(n(c(n2C)=O)C)=O)C)c21
n(cn(c1c(n(c(n2C)=O)C)=O)C)c12
n(cn(c1c(n(C)c2=O)=O)C)c1n2C
n(cn(c1c(n(C)c(=O)n2C)=O)C)c21
n(cn(c1c(n(C)c(=O)n2C)=O)C)c12
n(cn(c1c(n(C)c(n2C)=O)=O)C)c21
n(cn(c1c(n(C)c(n2C)=O)=O)C)c12
n(c1c2c(=O)n(c(=O)n1C)C)cn2C
n(c1c2c(=O)n(c(n1C)=O)C)cn2C
n(c1c2c(=O)n(C)c(=O)n1C)cn2C
n(c1c2c(=O)n(C)c(n1C)=O)cn2C
n(c1c2c(n(c(=O)n1C)C)=O)cn2C
n(c1c2c(n(c(n1C)=O)C)=O)cn2C
n(c1c2c(n(C)c(=O)n1C)=O)cn2C
n(c1c2c(n(C)c(n1C)=O)=O)cn2C
n(c1c(n2C)c(=O)n(c(=O)n1C)C)c2
n(c1c(n2C)c(=O)n(c(n1C)=O)C)c2
n(c1c(n2C)c(=O)n(C)c(=O)n1C)c2
n(c1c(n2C)c(=O)n(C)c(n1C)=O)c2
n(c1c(n2C)c(n(c(=O)n1C)C)=O)c2
n(c1c(n2C)c(n(c(n1C)=O)C)=O)c2
n(c1c(n2C)c(n(C)c(=O)n1C)=O)c2
n(c1c(n2C)c(n(C)c(n1C)=O)=O)c2
n(c1c(c(=O)n(c(=O)n1C)C)n2C)c2
n(c1c(c(=O)n(c(n1C)=O)C)n2C)c2
n(c1c(c(=O)n(C)c(=O)n1C)n2C)c2
n(c1c(c(=O)n(C)c(n1C)=O)n2C)c2
n(c1c(c(n(c(=O)n1C)C)=O)n2C)c2
n(c1c(c(n(c(n1C)=O)C)=O)n2C)c2
n(c1c(c(n(C)c(=O)n1C)=O)n2C)c2
n(c1c(c(n(C)c(n1C)=O)=O)n2C)c2
n(c1n2C)cn(C)c1c(=O)n(c2=O)C
n(c1n2C)cn(C)c1c(=O)n(C)c2=O
n(c1n2C)cn(C)c1c(n(c2=O)C)=O
n(c1n2C)cn(C)c1c(n(C)c2=O)=O
n(c1n2C)cn(c1c(=O)n(c2=O)C)C
n(c1n2C)cn(c1c(=O)n(C)c2=O)C
n(c1n2C)cn(c1c(n(c2=O)C)=O)C
n(c1n2C)cn(c1c(n(C)c2=O)=O)C
n(c1n(c2=O)C)cn(C)c1c(=O)n2C
n(c1n(c2=O)C)cn(C)c1c(n2C)=O
n(c1n(c2=O)C)cn(c1c(=O)n2C)C
n(c1n(c2=O)C)cn(c1c(n2C)=O)C
n(c1n(c(n2C)=O)C)cn(C)c1c2=O
n(c1n(c(n2C)=O)C)cn(c1c2=O)C
n(c1n(c(n(c2=O)C)=O)C)cn(C)c12
n(c1n(c(n(c2=O)C)=O)C)cn(C)c21
n(c1n(c(n(c2=O)C)=O)C)cn(c12)C
n(c1n(c(n(c2=O)C)=O)C)cn(c21)C
n(c1n(c(n(c(c1n2C)=O)C)=O)C)c2
n(c1n(c(n(c(=O)c1n2C)C)=O)C)c2
n(c1n(c(n(C)c2=O)=O)C)cn(C)c12
n(c1n(c(n(C)c2=O)=O)C)cn(C)c21
n(c1n(c(n(C)c2=O)=O)C)cn(c12)C
n(c1n(c(n(C)c2=O)=O)C)cn(c21)C
n(c1n(c(n(C)c(c1n2C)=O)=O)C)c2
n(c1n(c(n(C)c(=O)c1n2C)=O)C)c2
n(c1n(c(=O)n2C)C)cn(C)c1c2=O
n(c1n(c(=O)n2C)C)cn(c1c2=O)C
n(c1n(c(=O)n(c2=O)C)C)cn(C)c12
n(c1n(c(=O)n(c2=O)C)C)cn(C)c21
n(c1n(c(=O)n(c2=O)C)C)cn(c12)C
n(c1n(c(=O)n(c2=O)C)C)cn(c21)C
n(c1n(c(=O)n(c(c1n2C)=O)C)C)c2
n(c1n(c(=O)n(c(=O)c1n2C)C)C)c2
n(c1n(c(=O)n(C)c2=O)C)cn(C)c12
n(c1n(c(=O)n(C)c2=O)C)cn(C)c21
n(c1n(c(=O)n(C)c2=O)C)cn(c12)C
n(c1n(c(=O)n(C)c2=O)C)cn(c21)C
n(c1n(c(=O)n(C)c(c1n2C)=O)C)c2
n(c1n(c(=O)n(C)c(=O)c1n2C)C)c2
n(c1n(C)c2=O)cn(C)c1c(=O)n2C
n(c1n(C)c2=O)cn(C)c1c(n2C)=O
n(c1n(C)c2=O)cn(c1c(=O)n2C)C
n(c1n(C)c2=O)cn(c1c(n2C)=O)C
n(c1n(C)c(n2C)=O)cn(C)c1c2=O
n(c1n(C)c(n2C)=O)cn(c1c2=O)C
n(c1n(C)c(n(c2=O)C)=O)cn(C)c12
n(c1n(C)c(n(c2=O)C)=O)cn(C)c21
n(c1n(C)c(n(c2=O)C)=O)cn(c12)C
n(c1n(C)c(n(c2=O)C)=O)cn(c21)C
n(c1n(C)c(n(c(c1n2C)=O)C)=O)c2
n(c1n(C)c(n(c(=O)c1n2C)C)=O)c2
n(c1n(C)c(n(C)c2=O)=O)cn(C)c12
n(c1n(C)c(n(C)c2=O)=O)cn(C)c21
n(c1n(C)c(n(C)c2=O)=O)cn(c12)C
n(c1n(C)c(n(C)c2=O)=O)cn(c21)C
n(c1n(C)c(n(C)c(c1n2C)=O)=O)c2
n(c1n(C)c(n(C)c(=O)c1n2C)=O)c2
n(c1n(C)c(=O)n2C)cn(C)c1c2=O
n(c1n(C)c(=O)n2C)cn(c1c2=O)C
n(c1n(C)c(=O)n(c2=O)C)cn(C)c12
n(c1n(C)c(=O)n(c2=O)C)cn(C)c21
n(c1n(C)c(=O)n(c2=O)C)cn(c12)C
n(c1n(C)c(=O)n(c2=O)C)cn(c21)C
n(c1n(C)c(=O)n(c(c1n2C)=O)C)c2
n(c1n(C)c(=O)n(c(=O)c1n2C)C)c2
n(c1n(C)c(=O)n(C)c2=O)cn(C)c12
n(c1n(C)c(=O)n(C)c2=O)cn(C)c21
n(c1n(C)c(=O)n(C)c2=O)cn(c12)C
n(c1n(C)c(=O)n(C)c2=O)cn(c21)C
n(c1n(C)c(=O)n(C)c(c1n2C)=O)c2
n(c1n(C)c(=O)n(C)c(=O)c1n2C)c2
n(c(n1C)c2c(=O)n(c1=O)C)cn2C
n(c(n1C)c2c(=O)n(C)c1=O)cn2C
n(c(n1C)c2c(n(c1=O)C)=O)cn2C
n(c(n1C)c2c(n(C)c1=O)=O)cn2C
n(c(n1C)c(n2C)c(=O)n(c1=O)C)c2
n(c(n1C)c(n2C)c(=O)n(C)c1=O)c2
n(c(n1C)c(n2C)c(n(c1=O)C)=O)c2
n(c(n1C)c(n2C)c(n(C)c1=O)=O)c2
n(c(n1C)c(c(=O)n(c1=O)C)n2C)c2
n(c(n1C)c(c(=O)n(C)c1=O)n2C)c2
n(c(n1C)c(c(n(c1=O)C)=O)n2C)c2
n(c(n1C)c(c(n(C)c1=O)=O)n2C)c2
n(c(n(c1=O)C)c2c(=O)n1C)cn2C
n(c(n(c1=O)C)c2c(n1C)=O)cn2C
n(c(n(c1=O)C)c(n2C)c(=O)n1C)c2
n(c(n(c1=O)C)c(n2C)c(n1C)=O)c2
n(c(n(c1=O)C)c(c(=O)n1C)n2C)c2
n(c(n(c1=O)C)c(c(n1C)=O)n2C)c2
n(c(n(c(n1C)=O)C)c2c1=O)cn2C
n(c(n(c(n1C)=O)C)c(n2C)c1=O)c2
n(c(n(c(n1C)=O)C)c(c1=O)n2C)c2
n(c(n(c(n(c1=O)C)=O)C)c1n2C)c2
n(c(n(c(n(C)c1=O)=O)C)c1n2C)c2
n(c(n(c(=O)n1C)C)c2c1=O)cn2C
n(c(n(c(=O)n1C)C)c(n2C)c1=O)c2
n(c(n(c(=O)n1C)C)c(c1=O)n2C)c2
n(c(n(c(=O)n(c1=O)C)C)c1n2C)c2
n(c(n(c(=O)n(C)c1=O)C)c1n2C)c2
n(c(n(C)c1=O)c2c(=O)n1C)cn2C
n(c(n(C)c1=O)c2c(n1C)=O)cn2C
n(c(n(C)c1=O)c(n2C)c(=O)n1C)c2
n(c(n(C)c1=O)c(n2C)c(n1C)=O)c2
n(c(n(C)c1=O)c(c(=O)n1C)n2C)c2
n(c(n(C)c1=O)c(c(n1C)=O)n2C)c2
n(c(n(C)c(n1C)=O)c2c1=O)cn2C
n(c(n(C)c(n1C)=O)c(n2C)c1=O)c2
n(c(n(C)c(n1C)=O)c(c1=O)n2C)c2
n(c(n(C)c(n(c1=O)C)=O)c1n2C)c2
n(c(n(C)c(n(C)c1=O)=O)c1n2C)c2
n(c(n(C)c(=O)n1C)c2c1=O)cn2C
n(c(n(C)c(=O)n1C)c(n2C)c1=O)c2
n(c(n(C)c(=O)n1C)c(c1=O)n2C)c2
n(c(n(C)c(=O)n(c1=O)C)c1n2C)c2
n(c(n(C)c(=O)n(C)c1=O)c1n2C)c2
n(c(c1c2=O)n(c(n2C)=O)C)cn1C
n(c(c1c2=O)n(c(=O)n2C)C)cn1C
n(c(c1c2=O)n(C)c(n2C)=O)cn1C
n(c(c1c2=O)n(C)c(=O)n2C)cn1C
n(c(c1c(=O)n2C)n(c2=O)C)cn1C
n(c(c1c(=O)n2C)n(C)c2=O)cn1C
n(c(c1c(=O)n(c2=O)C)n2C)cn1C
n(c(c1c(=O)n(C)c2=O)n2C)cn1C
n(c(c1c(n2C)=O)n(c2=O)C)cn1C
n(c(c1c(n2C)=O)n(C)c2=O)cn1C
n(c(c1c(n(c2=O)C)=O)n2C)cn1C
n(c(c1c(n(C)c2=O)=O)n2C)cn1C
n(c(c1n2C)n(c(n(c1=O)C)=O)C)c2
n(c(c1n2C)n(c(n(C)c1=O)=O)C)c2
n(c(c1n2C)n(c(=O)n(c1=O)C)C)c2
n(c(c1n2C)n(c(=O)n(C)c1=O)C)c2
n(c(c1n2C)n(C)c(n(c1=O)C)=O)c2
n(c(c1n2C)n(C)c(n(C)c1=O)=O)c2
n(c(c1n2C)n(C)c(=O)n(c1=O)C)c2
n(c(c1n2C)n(C)c(=O)n(C)c1=O)c2
n(c(c(n1C)c2=O)n(c(n2C)=O)C)c1
n(c(c(n1C)c2=O)n(c(=O)n2C)C)c1
n(c(c(n1C)c2=O)n(C)c(n2C)=O)c1
n(c(c(n1C)c2=O)n(C)c(=O)n2C)c1
n(c(c(n1C)c(=O)n2C)n(c2=O)C)c1
n(c(c(n1C)c(=O)n2C)n(C)c2=O)c1
n(c(c(n1C)c(=O)n(c2=O)C)n2C)c1
n(c(c(n1C)c(=O)n(C)c2=O)n2C)c1
n(c(c(n1C)c(n2C)=O)n(c2=O)C)c1
n(c(c(n1C)c(n2C)=O)n(C)c2=O)c1
n(c(c(n1C)c(n(c2=O)C)=O)n2C)c1
n(c(c(n1C)c(n(C)c2=O)=O)n2C)c1
n(c(c(c1=O)n2C)n(c(n1C)=O)C)c2
n(c(c(c1=O)n2C)n(c(=O)n1C)C)c2
n(c(c(c1=O)n2C)n(C)c(n1C)=O)c2
n(c(c(c1=O)n2C)n(C)c(=O)n1C)c2
n(c(c(c(=O)n1C)n2C)n(c1=O)C)c2
n(c(c(c(=O)n1C)n2C)n(C)c1=O)c2
n(c(c(c(=O)n(c1=O)C)n2C)n1C)c2
n(c(c(c(=O)n(C)c1=O)n2C)n1C)c2
n(c(c(c(n1C)=O)n2C)n(c1=O)C)c2
n(c(c(c(n1C)=O)n2C)n(C)c1=O)c2
n(c(c(c(n(c1=O)C)=O)n2C)n1C)c2
n(c(c(c(n(C)c1=O)=O)n2C)n1C)c2
c12c(n(C)cn1)c(=O)n(c(=O)n2C)C
c12c(n(C)cn1)c(=O)n(c(n2C)=O)C
c12c(n(C)cn1)c(=O)n(C)c(=O)n2C
c12c(n(C)cn1)c(=O)n(C)c(n2C)=O
c12c(n(C)cn1)c(n(c(=O)n2C)C)=O
c12c(n(C)cn1)c(n(c(n2C)=O)C)=O
c12c(n(C)cn1)c(n(C)c(=O)n2C)=O
c12c(n(C)cn1)c(n(C)c(n2C)=O)=O
c12c(n(cn1)C)c(=O)n(c(=O)n2C)C
c12c(n(cn1)C)c(=O)n(c(n2C)=O)C
c12c(n(cn1)C)c(=O)n(C)c(=O)n2C
c12c(n(cn1)C)c(=O)n(C)c(n2C)=O
c12c(n(cn1)C)c(n(c(=O)n2C)C)=O
c12c(n(cn1)C)c(n(c(n2C)=O)C)=O
c12c(n(cn1)C)c(n(C)c(=O)n2C)=O
c12c(n(cn1)C)c(n(C)c(n2C)=O)=O
c12c(c(=O)n(c(=O)n2C)C)n(C)cn1
c12c(c(=O)n(c(=O)n2C)C)n(cn1)C
c12c(c(=O)n(c(n2C)=O)C)n(C)cn1
c12c(c(=O)n(c(n2C)=O)C)n(cn1)C
c12c(c(=O)n(C)c(=O)n2C)n(C)cn1
c12c(c(=O)n(C)c(=O)n2C)n(cn1)C
c12c(c(=O)n(C)c(n2C)=O)n(C)cn1
c12c(c(=O)n(C)c(n2C)=O)n(cn1)C
c12c(c(n(c(=O)n2C)C)=O)n(C)cn1
c12c(c(n(c(=O)n2C)C)=O)n(cn1)C
c12c(c(n(c(n2C)=O)C)=O)n(C)cn1
c12c(c(n(c(n2C)=O)C)=O)n(cn1)C
c12c(c(n(C)c(=O)n2C)=O)n(C)cn1
c12c(c(n(C)c(=O)n2C)=O)n(cn1)C
c12c(c(n(C)c(n2C)=O)=O)n(C)cn1
c12c(c(n(C)c(n2C)=O)=O)n(cn1)C
c12n(c(n(c(c2n(C)cn1)=O)C)=O)C
c12n(c(n(c(c2n(cn1)C)=O)C)=O)C
c12n(c(n(c(=O)c2n(C)cn1)C)=O)C
c12n(c(n(c(=O)c2n(cn1)C)C)=O)C
c12n(c(n(C)c(c2n(C)cn1)=O)=O)C
c12n(c(n(C)c(c2n(cn1)C)=O)=O)C
c12n(c(n(C)c(=O)c2n(C)cn1)=O)C
c12n(c(n(C)c(=O)c2n(cn1)C)=O)C
c12n(c(=O)n(c(c2n(C)cn1)=O)C)C
c12n(c(=O)n(c(c2n(cn1)C)=O)C)C
c12n(c(=O)n(c(=O)c2n(C)cn1)C)C
c12n(c(=O)n(c(=O)c2n(cn1)C)C)C
c12n(c(=O)n(C)c(c2n(C)cn1)=O)C
c12n(c(=O)n(C)c(c2n(cn1)C)=O)C
c12n(c(=O)n(C)c(=O)c2n(C)cn1)C
c12n(c(=O)n(C)c(=O)c2n(cn1)C)C
c12n(C)c(n(c(c2n(C)cn1)=O)C)=O
c12n(C)c(n(c(c2n(cn1)C)=O)C)=O
c12n(C)c(n(c(=O)c2n(C)cn1)C)=O
c12n(C)c(n(c(=O)c2n(cn1)C)C)=O
c12n(C)c(n(C)c(c2n(C)cn1)=O)=O
c12n(C)c(n(C)c(c2n(cn1)C)=O)=O
c12n(C)c(n(C)c(=O)c2n(C)cn1)=O
c12n(C)c(n(C)c(=O)c2n(cn1)C)=O
c12n(C)c(=O)n(c(c2n(C)cn1)=O)C
c12n(C)c(=O)n(c(c2n(cn1)C)=O)C
c12n(C)c(=O)n(c(=O)c2n(C)cn1)C
c12n(C)c(=O)n(c(=O)c2n(cn1)C)C
c12n(C)c(=O)n(C)c(c2n(C)cn1)=O
c12n(C)c(=O)n(C)c(c2n(cn1)C)=O
c12n(C)c(=O)n(C)c(=O)c2n(C)cn1
c12n(C)c(=O)n(C)c(=O)c2n(cn1)C
c1(n2C)c(n(C)cn1)c(=O)n(c2=O)C
c1(n2C)c(n(C)cn1)c(=O)n(C)c2=O
c1(n2C)c(n(C)cn1)c(n(c2=O)C)=O
c1(n2C)c(n(C)cn1)c(n(C)c2=O)=O
c1(n2C)c(n(cn1)C)c(=O)n(c2=O)C
c1(n2C)c(n(cn1)C)c(=O)n(C)c2=O
c1(n2C)c(n(cn1)C)c(n(c2=O)C)=O
c1(n2C)c(n(cn1)C)c(n(C)c2=O)=O
c1(n2C)c(c(=O)n(c2=O)C)n(C)cn1
c1(n2C)c(c(=O)n(c2=O)C)n(cn1)C
c1(n2C)c(c(=O)n(C)c2=O)n(C)cn1
c1(n2C)c(c(=O)n(C)c2=O)n(cn1)C
c1(n2C)c(c(n(c2=O)C)=O)n(C)cn1
c1(n2C)c(c(n(c2=O)C)=O)n(cn1)C
c1(n2C)c(c(n(C)c2=O)=O)n(C)cn1
c1(n2C)c(c(n(C)c2=O)=O)n(cn1)C
c1(n(c2=O)C)c(n(C)cn1)c(=O)n2C
c1(n(c2=O)C)c(n(C)cn1)c(n2C)=O
c1(n(c2=O)C)c(n(cn1)C)c(=O)n2C
c1(n(c2=O)C)c(n(cn1)C)c(n2C)=O
c1(n(c2=O)C)c(c(=O)n2C)n(C)cn1
c1(n(c2=O)C)c(c(=O)n2C)n(cn1)C
c1(n(c2=O)C)c(c(n2C)=O)n(C)cn1
c1(n(c2=O)C)c(c(n2C)=O)n(cn1)C
c1(n(c(n2C)=O)C)c(n(C)cn1)c2=O
c1(n(c(n2C)=O)C)c(n(cn1)C)c2=O
c1(n(c(n2C)=O)C)c(c2=O)n(C)cn1
c1(n(c(n2C)=O)C)c(c2=O)n(cn1)C
c1(n(c(n(c2=O)C)=O)C)c2n(C)cn1
c1(n(c(n(c2=O)C)=O)C)c2n(cn1)C
c1(n(c(n(C)c2=O)=O)C)c2n(C)cn1
c1(n(c(n(C)c2=O)=O)C)c2n(cn1)C
c1(n(c(=O)n2C)C)c(n(C)cn1)c2=O
c1(n(c(=O)n2C)C)c(n(cn1)C)c2=O
c1(n(c(=O)n2C)C)c(c2=O)n(C)cn1
c1(n(c(=O)n2C)C)c(c2=O)n(cn1)C
c1(n(c(=O)n(c2=O)C)C)c2n(C)cn1
c1(n(c(=O)n(c2=O)C)C)c2n(cn1)C
c1(n(c(=O)n(C)c2=O)C)c2n(C)cn1
c1(n(c(=O)n(C)c2=O)C)c2n(cn1)C
c1(n(C)c2=O)c(n(C)cn1)c(=O)n2C
c1(n(C)c2=O)c(n(C)cn1)c(n2C)=O
c1(n(C)c2=O)c(n(cn1)C)c(=O)n2C
c1(n(C)c2=O)c(n(cn1)C)c(n2C)=O
c1(n(C)c2=O)c(c(=O)n2C)n(C)cn1
c1(n(C)c2=O)c(c(=O)n2C)n(cn1)C
c1(n(C)c2=O)c(c(n2C)=O)n(C)cn1
c1(n(C)c2=O)c(c(n2C)=O)n(cn1)C
c1(n(C)c(n2C)=O)c(n(C)cn1)c2=O
c1(n(C)c(n2C)=O)c(n(cn1)C)c2=O
c1(n(C)c(n2C)=O)c(c2=O)n(C)cn1
c1(n(C)c(n2C)=O)c(c2=O)n(cn1)C
c1(n(C)c(n(c2=O)C)=O)c2n(C)cn1
c1(n(C)c(n(c2=O)C)=O)c2n(cn1)C
c1(n(C)c(n(C)c2=O)=O)c2n(C)cn1
c1(n(C)c(n(C)c2=O)=O)c2n(cn1)C
c1(n(C)c(=O)n2C)c(n(C)cn1)c2=O
c1(n(C)c(=O)n2C)c(n(cn1)C)c2=O
c1(n(C)c(=O)n2C)c(c2=O)n(C)cn1
c1(n(C)c(=O)n2C)c(c2=O)n(cn1)C
c1(n(C)c(=O)n(c2=O)C)c2n(C)cn1
c1(n(C)c(=O)n(c2=O)C)c2n(cn1)C
c1(n(C)c(=O)n(C)c2=O)c2n(C)cn1
c1(n(C)c(=O)n(C)c2=O)c2n(cn1)C
c1(c2n(C)cn1)n(c(n(c2=O)C)=O)C
c1(c2n(C)cn1)n(c(n(C)c2=O)=O)C
c1(c2n(C)cn1)n(c(=O)n(c2=O)C)C
c1(c2n(C)cn1)n(c(=O)n(C)c2=O)C
c1(c2n(C)cn1)n(C)c(n(c2=O)C)=O
c1(c2n(C)cn1)n(C)c(n(C)c2=O)=O
c1(c2n(C)cn1)n(C)c(=O)n(c2=O)C
c1(c2n(C)cn1)n(C)c(=O)n(C)c2=O
c1(c2n(cn1)C)n(c(n(c2=O)C)=O)C
c1(c2n(cn1)C)n(c(n(C)c2=O)=O)C
c1(c2n(cn1)C)n(c(=O)n(c2=O)C)C
c1(c2n(cn1)C)n(c(=O)n(C)c2=O)C
c1(c2n(cn1)C)n(C)c(n(c2=O)C)=O
c1(c2n(cn1)C)n(C)c(n(C)c2=O)=O
c1(c2n(cn1)C)n(C)c(=O)n(c2=O)C
c1(c2n(cn1)C)n(C)c(=O)n(C)c2=O
c1(c(n(C)cn1)c2=O)n(c(n2C)=O)C
c1(c(n(C)cn1)c2=O)n(c(=O)n2C)C
c1(c(n(C)cn1)c2=O)n(C)c(n2C)=O
c1(c(n(C)cn1)c2=O)n(C)c(=O)n2C
c1(c(n(C)cn1)c(=O)n2C)n(c2=O)C
c1(c(n(C)cn1)c(=O)n2C)n(C)c2=O
c1(c(n(C)cn1)c(=O)n(c2=O)C)n2C
c1(c(n(C)cn1)c(=O)n(C)c2=O)n2C
c1(c(n(C)cn1)c(n2C)=O)n(c2=O)C
c1(c(n(C)cn1)c(n2C)=O)n(C)c2=O
c1(c(n(C)cn1)c(n(c2=O)C)=O)n2C
c1(c(n(C)cn1)c(n(C)c2=O)=O)n2C
c1(c(n(cn1)C)c2=O)n(c(n2C)=O)C
c1(c(n(cn1)C)c2=O)n(c(=O)n2C)C
c1(c(n(cn1)C)c2=O)n(C)c(n2C)=O
c1(c(n(cn1)C)c2=O)n(C)c(=O)n2C
c1(c(n(cn1)C)c(=O)n2C)n(c2=O)C
c1(c(n(cn1)C)c(=O)n2C)n(C)c2=O
c1(c(n(cn1)C)c(=O)n(c2=O)C)n2C
c1(c(n(cn1)C)c(=O)n(C)c2=O)n2C
c1(c(n(cn1)C)c(n2C)=O)n(c2=O)C
c1(c(n(cn1)C)c(n2C)=O)n(C)c2=O
c1(c(n(cn1)C)c(n(c2=O)C)=O)n2C
c1(c(n(cn1)C)c(n(C)c2=O)=O)n2C
c1(c(c2=O)n(C)cn1)n(c(n2C)=O)C
c1(c(c2=O)n(C)cn1)n(c(=O)n2C)C
c1(c(c2=O)n(C)cn1)n(C)c(n2C)=O
c1(c(c2=O)n(C)cn1)n(C)c(=O)n2C
c1(c(c2=O)n(cn1)C)n(c(n2C)=O)C
c1(c(c2=O)n(cn1)C)n(c(=O)n2C)C
c1(c(c2=O)n(cn1)C)n(C)c(n2C)=O
c1(c(c2=O)n(cn1)C)n(C)c(=O)n2C
c1(c(c(=O)n2C)n(C)cn1)n(c2=O)C
c1(c(c(=O)n2C)n(C)cn1)n(C)c2=O
c1(c(c(=O)n2C)n(cn1)C)n(c2=O)C
c1(c(c(=O)n2C)n(cn1)C)n(C)c2=O
c1(c(c(=O)n(c2=O)C)n(C)cn1)n2C
c1(c(c(=O)n(c2=O)C)n(cn1)C)n2C
c1(c(c(=O)n(C)c2=O)n(C)cn1)n2C
c1(c(c(=O)n(C)c2=O)n(cn1)C)n2C
c1(c(c(n2C)=O)n(C)cn1)n(c2=O)C
c1(c(c(n2C)=O)n(C)cn1)n(C)c2=O
c1(c(c(n2C)=O)n(cn1)C)n(c2=O)C
c1(c(c(n2C)=O)n(cn1)C)n(C)c2=O
c1(c(c(n(c2=O)C)=O)n(C)cn1)n2C
c1(c(c(n(c2=O)C)=O)n(cn1)C)n2C
c1(c(c(n(C)c2=O)=O)n(C)cn1)n2C
c1(c(c(n(C)c2=O)=O)n(cn1)C)n2C
c12c(n(C)cn2)c(=O)n(c(=O)n1C)C
c12c(n(C)cn2)c(=O)n(c(n1C)=O)C
c12c(n(C)cn2)c(=O)n(C)c(=O)n1C
c12c(n(C)cn2)c(=O)n(C)c(n1C)=O
c12c(n(C)cn2)c(n(c(=O)n1C)C)=O
c12c(n(C)cn2)c(n(c(n1C)=O)C)=O
c12c(n(C)cn2)c(n(C)c(=O)n1C)=O
c12c(n(C)cn2)c(n(C)c(n1C)=O)=O
c12c(n(cn2)C)c(=O)n(c(=O)n1C)C
c12c(n(cn2)C)c(=O)n(c(n1C)=O)C
c12c(n(cn2)C)c(=O)n(C)c(=O)n1C
c12c(n(cn2)C)c(=O)n(C)c(n1C)=O
c12c(n(cn2)C)c(n(c(=O)n1C)C)=O
c12c(n(cn2)C)c(n(c(n1C)=O)C)=O
c12c(n(cn2)C)c(n(C)c(=O)n1C)=O
c12c(n(cn2)C)c(n(C)c(n1C)=O)=O
c12c(c(=O)n(c(=O)n1C)C)n(C)cn2
c12c(c(=O)n(c(=O)n1C)C)n(cn2)C
c12c(c(=O)n(c(n1C)=O)C)n(C)cn2
c12c(c(=O)n(c(n1C)=O)C)n(cn2)C
c12c(c(=O)n(C)c(=O)n1C)n(C)cn2
c12c(c(=O)n(C)c(=O)n1C)n(cn2)C
c12c(c(=O)n(C)c(n1C)=O)n(C)cn2
c12c(c(=O)n(C)c(n1C)=O)n(cn2)C
c12c(c(n(c(=O)n1C)C)=O)n(C)cn2
c12c(c(n(c(=O)n1C)C)=O)n(cn2)C
c12c(c(n(c(n1C)=O)C)=O)n(C)cn2
c12c(c(n(c(n1C)=O)C)=O)n(cn2)C
c12c(c(n(C)c(=O)n1C)=O)n(C)cn2
c12c(c(n(C)c(=O)n1C)=O)n(cn2)C
c12c(c(n(C)c(n1C)=O)=O)n(C)cn2
c12c(c(n(C)c(n1C)=O)=O)n(cn2)C
c12ncn(C)c2c(=O)n(c(=O)n1C)C
c12ncn(C)c2c(=O)n(c(n1C)=O)C
c12ncn(C)c2c(=O)n(C)c(=O)n1C
c12ncn(C)c2c(=O)n(C)c(n1C)=O
c12ncn(C)c2c(n(c(=O)n1C)C)=O
c12ncn(C)c2c(n(c(n1C)=O)C)=O
c12ncn(C)c2c(n(C)c(=O)n1C)=O
c12ncn(C)c2c(n(C)c(n1C)=O)=O
c12ncn(c2c(=O)n(c(=O)n1C)C)C
c12ncn(c2c(=O)n(c(n1C)=O)C)C
c12ncn(c2c(=O)n(C)c(=O)n1C)C
c12ncn(c2c(=O)n(C)c(n1C)=O)C
c12ncn(c2c(n(c(=O)n1C)C)=O)C
c12ncn(c2c(n(c(n1C)=O)C)=O)C
c12ncn(c2c(n(C)c(=O)n1C)=O)C
c12ncn(c2c(n(C)c(n1C)=O)=O)C
c1(ncn2C)c2c(=O)n(c(=O)n1C)C
c1(ncn2C)c2c(=O)n(c(n1C)=O)C
c1(ncn2C)c2c(=O)n(C)c(=O)n1C
c1(ncn2C)c2c(=O)n(C)c(n1C)=O
c1(ncn2C)c2c(n(c(=O)n1C)C)=O
c1(ncn2C)c2c(n(c(n1C)=O)C)=O
c1(ncn2C)c2c(n(C)c(=O)n1C)=O
c1(ncn2C)c2c(n(C)c(n1C)=O)=O
c1(c2c(=O)n(c(=O)n1C)C)ncn2C
c1(c2c(=O)n(c(n1C)=O)C)ncn2C
c1(c2c(=O)n(C)c(=O)n1C)ncn2C
c1(c2c(=O)n(C)c(n1C)=O)ncn2C
c1(c2c(n(c(=O)n1C)C)=O)ncn2C
c1(c2c(n(c(n1C)=O)C)=O)ncn2C
c1(c2c(n(C)c(=O)n1C)=O)ncn2C
c1(c2c(n(C)c(n1C)=O)=O)ncn2C
c1(c(n2C)c(=O)n(c(=O)n1C)C)nc2
c1(c(n2C)c(=O)n(c(n1C)=O)C)nc2
c1(c(n2C)c(=O)n(C)c(=O)n1C)nc2
c1(c(n2C)c(=O)n(C)c(n1C)=O)nc2
c1(c(n2C)c(n(c(=O)n1C)C)=O)nc2
c1(c(n2C)c(n(c(n1C)=O)C)=O)nc2
c1(c(n2C)c(n(C)c(=O)n1C)=O)nc2
c1(c(n2C)c(n(C)c(n1C)=O)=O)nc2
c1(c(c(=O)n(c(=O)n1C)C)n2C)nc2
c1(c(c(=O)n(c(n1C)=O)C)n2C)nc2
c1(c(c(=O)n(C)c(=O)n1C)n2C)nc2
c1(c(c(=O)n(C)c(n1C)=O)n2C)nc2
c1(c(c(n(c(=O)n1C)C)=O)n2C)nc2
c1(c(c(n(c(n1C)=O)C)=O)n2C)nc2
c1(c(c(n(C)c(=O)n1C)=O)n2C)nc2
c1(c(c(n(C)c(n1C)=O)=O)n2C)nc2
c12n(c(n(c(c1n(C)cn2)=O)C)=O)C
c12n(c(n(c(c1n(cn2)C)=O)C)=O)C
c12n(c(n(c(=O)c1n(C)cn2)C)=O)C
c12n(c(n(c(=O)c1n(cn2)C)C)=O)C
c12n(c(n(C)c(c1n(C)cn2)=O)=O)C
c12n(c(n(C)c(c1n(cn2)C)=O)=O)C
c12n(c(n(C)c(=O)c1n(C)cn2)=O)C
c12n(c(n(C)c(=O)c1n(cn2)C)=O)C
c12n(c(=O)n(c(c1n(C)cn2)=O)C)C
c12n(c(=O)n(c(c1n(cn2)C)=O)C)C
c12n(c(=O)n(c(=O)c1n(C)cn2)C)C
c12n(c(=O)n(c(=O)c1n(cn2)C)C)C
c12n(c(=O)n(C)c(c1n(C)cn2)=O)C
c12n(c(=O)n(C)c(c1n(cn2)C)=O)C
c12n(c(=O)n(C)c(=O)c1n(C)cn2)C
c12n(c(=O)n(C)c(=O)c1n(cn2)C)C
c12n(C)c(n(c(c1n(C)cn2)=O)C)=O
c12n(C)c(n(c(c1n(cn2)C)=O)C)=O
c12n(C)c(n(c(=O)c1n(C)cn2)C)=O
c12n(C)c(n(c(=O)c1n(cn2)C)C)=O
c12n(C)c(n(C)c(c1n(C)cn2)=O)=O
c12n(C)c(n(C)c(c1n(cn2)C)=O)=O
c12n(C)c(n(C)c(=O)c1n(C)cn2)=O
c12n(C)c(n(C)c(=O)c1n(cn2)C)=O
c12n(C)c(=O)n(c(c1n(C)cn2)=O)C
c12n(C)c(=O)n(c(c1n(cn2)C)=O)C
c12n(C)c(=O)n(c(=O)c1n(C)cn2)C
c12n(C)c(=O)n(c(=O)c1n(cn2)C)C
c12n(C)c(=O)n(C)c(c1n(C)cn2)=O
c12n(C)c(=O)n(C)c(c1n(cn2)C)=O
c12n(C)c(=O)n(C)c(=O)c1n(C)cn2
c12n(C)c(=O)n(C)c(=O)c1n(cn2)C
c12ncn(C)c1c(=O)n(c(=O)n2C)C
c12ncn(C)c1c(=O)n(c(n2C)=O)C
c12ncn(C)c1c(=O)n(C)c(=O)n2C
c12ncn(C)c1c(=O)n(C)c(n2C)=O
c12ncn(C)c1c(n(c(=O)n2C)C)=O
c12ncn(C)c1c(n(c(n2C)=O)C)=O
c12ncn(C)c1c(n(C)c(=O)n2C)=O
c12ncn(C)c1c(n(C)c(n2C)=O)=O
c12ncn(c1c(=O)n(c(=O)n2C)C)C
c12ncn(c1c(=O)n(c(n2C)=O)C)C
c12ncn(c1c(=O)n(C)c(=O)n2C)C
c12ncn(c1c(=O)n(C)c(n2C)=O)C
c12ncn(c1c(n(c(=O)n2C)C)=O)C
c12ncn(c1c(n(c(n2C)=O)C)=O)C
c12ncn(c1c(n(C)c(=O)n2C)=O)C
c12ncn(c1c(n(C)c(n2C)=O)=O)C
c1(ncn2C)n(c(n(c(c21)=O)C)=O)C
c1(ncn2C)n(c(n(c(c12)=O)C)=O)C
c1(ncn2C)n(c(n(c(=O)c21)C)=O)C
c1(ncn2C)n(c(n(c(=O)c12)C)=O)C
c1(ncn2C)n(c(n(C)c(c21)=O)=O)C
c1(ncn2C)n(c(n(C)c(c12)=O)=O)C
c1(ncn2C)n(c(n(C)c(=O)c21)=O)C
c1(ncn2C)n(c(n(C)c(=O)c12)=O)C
c1(ncn2C)n(c(=O)n(c(c21)=O)C)C
c1(ncn2C)n(c(=O)n(c(c12)=O)C)C
c1(ncn2C)n(c(=O)n(c(=O)c21)C)C
c1(ncn2C)n(c(=O)n(c(=O)c12)C)C
c1(ncn2C)n(c(=O)n(C)c(c21)=O)C
c1(ncn2C)n(c(=O)n(C)c(c12)=O)C
c1(ncn2C)n(c(=O)n(C)c(=O)c21)C
c1(ncn2C)n(c(=O)n(C)c(=O)c12)C
c1(ncn2C)n(C)c(n(c(c21)=O)C)=O
c1(ncn2C)n(C)c(n(c(c12)=O)C)=O
c1(ncn2C)n(C)c(n(c(=O)c21)C)=O
c1(ncn2C)n(C)c(n(c(=O)c12)C)=O
c1(ncn2C)n(C)c(n(C)c(c21)=O)=O
c1(ncn2C)n(C)c(n(C)c(c12)=O)=O
c1(ncn2C)n(C)c(n(C)c(=O)c21)=O
c1(ncn2C)n(C)c(n(C)c(=O)c12)=O
c1(ncn2C)n(C)c(=O)n(c(c21)=O)C
c1(ncn2C)n(C)c(=O)n(c(c12)=O)C
c1(ncn2C)n(C)c(=O)n(c(=O)c21)C
c1(ncn2C)n(C)c(=O)n(c(=O)c12)C
c1(ncn2C)n(C)c(=O)n(C)c(c21)=O
c1(ncn2C)n(C)c(=O)n(C)c(c12)=O
c1(ncn2C)n(C)c(=O)n(C)c(=O)c21
c1(ncn2C)n(C)c(=O)n(C)c(=O)c12
c1(ncn(C)c1c2=O)n(c(n2C)=O)C
c1(ncn(C)c1c2=O)n(c(=O)n2C)C
c1(ncn(C)c1c2=O)n(C)c(n2C)=O
c1(ncn(C)c1c2=O)n(C)c(=O)n2C
c1(ncn(C)c1c(=O)n2C)n(c2=O)C
c1(ncn(C)c1c(=O)n2C)n(C)c2=O
c1(ncn(C)c1c(=O)n(c2=O)C)n2C
c1(ncn(C)c1c(=O)n(C)c2=O)n2C
c1(ncn(C)c1c(n2C)=O)n(c2=O)C
c1(ncn(C)c1c(n2C)=O)n(C)c2=O
c1(ncn(C)c1c(n(c2=O)C)=O)n2C
c1(ncn(C)c1c(n(C)c2=O)=O)n2C
c1(ncn(c1c2=O)C)n(c(n2C)=O)C
c1(ncn(c1c2=O)C)n(c(=O)n2C)C
c1(ncn(c1c2=O)C)n(C)c(n2C)=O
c1(ncn(c1c2=O)C)n(C)c(=O)n2C
c1(ncn(c1c(=O)n2C)C)n(c2=O)C
c1(ncn(c1c(=O)n2C)C)n(C)c2=O
c1(ncn(c1c(=O)n(c2=O)C)C)n2C
c1(ncn(c1c(=O)n(C)c2=O)C)n2C
c1(ncn(c1c(n2C)=O)C)n(c2=O)C
c1(ncn(c1c(n2C)=O)C)n(C)c2=O
c1(ncn(c1c(n(c2=O)C)=O)C)n2C
c1(ncn(c1c(n(C)c2=O)=O)C)n2C
c1(n2C)ncn(C)c1c(=O)n(c2=O)C
c1(n2C)ncn(C)c1c(=O)n(C)c2=O
c1(n2C)ncn(C)c1c(n(c2=O)C)=O
c1(n2C)ncn(C)c1c(n(C)c2=O)=O
c1(n2C)ncn(c1c(=O)n(c2=O)C)C
c1(n2C)ncn(c1c(=O)n(C)c2=O)C
c1(n2C)ncn(c1c(n(c2=O)C)=O)C
c1(n2C)ncn(c1c(n(C)c2=O)=O)C
c1(n(c2=O)C)ncn(C)c1c(=O)n2C
c1(n(c2=O)C)ncn(C)c1c(n2C)=O
c1(n(c2=O)C)ncn(c1c(=O)n2C)C
c1(n(c2=O)C)ncn(c1c(n2C)=O)C
c1(n(c(n2C)=O)C)ncn(C)c1c2=O
c1(n(c(n2C)=O)C)ncn(c1c2=O)C
c1(n(c(n(c2=O)C)=O)C)ncn(C)c12
c1(n(c(n(c2=O)C)=O)C)ncn(C)c21
c1(n(c(n(c2=O)C)=O)C)ncn(c12)C
c1(n(c(n(c2=O)C)=O)C)ncn(c21)C
c1(n(c(n(c(c1n2C)=O)C)=O)C)nc2
c1(n(c(n(c(=O)c1n2C)C)=O)C)nc2
c1(n(c(n(C)c2=O)=O)C)ncn(C)c12
c1(n(c(n(C)c2=O)=O)C)ncn(C)c21
c1(n(c(n(C)c2=O)=O)C)ncn(c12)C
c1(n(c(n(C)c2=O)=O)C)ncn(c21)C
c1(n(c(n(C)c(c1n2C)=O)=O)C)nc2
c1(n(c(n(C)c(=O)c1n2C)=O)C)nc2
c1(n(c(=O)n2C)C)ncn(C)c1c2=O
c1(n(c(=O)n2C)C)ncn(c1c2=O)C
c1(n(c(=O)n(c2=O)C)C)ncn(C)c12
c1(n(c(=O)n(c2=O)C)C)ncn(C)c21
c1(n(c(=O)n(c2=O)C)C)ncn(c12)C
c1(n(c(=O)n(c2=O)C)C)ncn(c21)C
c1(n(c(=O)n(c(c1n2C)=O)C)C)nc2
c1(n(c(=O)n(c(=O)c1n2C)C)C)nc2
c1(n(c(=O)n(C)c2=O)C)ncn(C)c12
c1(n(c(=O)n(C)c2=O)C)ncn(C)c21
c1(n(c(=O)n(C)c2=O)C)ncn(c12)C
c1(n(c(=O)n(C)c2=O)C)ncn(c21)C
c1(n(c(=O)n(C)c(c1n2C)=O)C)nc2
c1(n(c(=O)n(C)c(=O)c1n2C)C)nc2
c1(n(C)c2=O)ncn(C)c1c(=O)n2C
c1(n(C)c2=O)ncn(C)c1c(n2C)=O
c1(n(C)c2=O)ncn(c1c(=O)n2C)C
c1(n(C)c2=O)ncn(c1c(n2C)=O)C
c1(n(C)c(n2C)=O)ncn(C)c1c2=O
c1(n(C)c(n2C)=O)ncn(c1c2=O)C
c1(n(C)c(n(c2=O)C)=O)ncn(C)c12
c1(n(C)c(n(c2=O)C)=O)ncn(C)c21
c1(n(C)c(n(c2=O)C)=O)ncn(c12)C
c1(n(C)c(n(c2=O)C)=O)ncn(c21)C
c1(n(C)c(n(c(c1n2C)=O)C)=O)nc2
c1(n(C)c(n(c(=O)c1n2C)C)=O)nc2
c1(n(C)c(n(C)c2=O)=O)ncn(C)c12
c1(n(C)c(n(C)c2=O)=O)ncn(C)c21
c1(n(C)c(n(C)c2=O)=O)ncn(c12)C
c1(n(C)c(n(C)c2=O)=O)ncn(c21)C
c1(n(C)c(n(C)c(c1n2C)=O)=O)nc2
c1(n(C)c(n(C)c(=O)c1n2C)=O)nc2
c1(n(C)c(=O)n2C)ncn(C)c1c2=O
c1(n(C)c(=O)n2C)ncn(c1c2=O)C
c1(n(C)c(=O)n(c2=O)C)ncn(C)c12
c1(n(C)c(=O)n(c2=O)C)ncn(C)c21
c1(n(C)c(=O)n(c2=O)C)ncn(c12)C
c1(n(C)c(=O)n(c2=O)C)ncn(c21)C
c1(n(C)c(=O)n(c(c1n2C)=O)C)nc2
c1(n(C)c(=O)n(c(=O)c1n2C)C)nc2
c1(n(C)c(=O)n(C)c2=O)ncn(C)c12
c1(n(C)c(=O)n(C)c2=O)ncn(C)c21
c1(n(C)c(=O)n(C)c2=O)ncn(c12)C
c1(n(C)c(=O)n(C)c2=O)ncn(c21)C
c1(n(C)c(=O)n(C)c(c1n2C)=O)nc2
c1(n(C)c(=O)n(C)c(=O)c1n2C)nc2
c12c(=O)n(c(=O)n(c2ncn1C)C)C
c12c(=O)n(c(=O)n(C)c2ncn1C)C
c12c(=O)n(c(n(c2ncn1C)C)=O)C
c12c(=O)n(c(n(C)c2ncn1C)=O)C
c12c(=O)n(C)c(=O)n(c2ncn1C)C
c12c(=O)n(C)c(=O)n(C)c2ncn1C
c12c(=O)n(C)c(n(c2ncn1C)C)=O
c12c(=O)n(C)c(n(C)c2ncn1C)=O
c12c(n(c(=O)n(c2ncn1C)C)C)=O
c12c(n(c(=O)n(C)c2ncn1C)C)=O
c12c(n(c(n(c2ncn1C)C)=O)C)=O
c12c(n(c(n(C)c2ncn1C)=O)C)=O
c12c(n(C)c(=O)n(c2ncn1C)C)=O
c12c(n(C)c(=O)n(C)c2ncn1C)=O
c12c(n(C)c(n(c2ncn1C)C)=O)=O
c12c(n(C)c(n(C)c2ncn1C)=O)=O
c12c(ncn1C)n(c(n(c2=O)C)=O)C
c12c(ncn1C)n(c(n(C)c2=O)=O)C
c12c(ncn1C)n(c(=O)n(c2=O)C)C
c12c(ncn1C)n(c(=O)n(C)c2=O)C
c12c(ncn1C)n(C)c(n(c2=O)C)=O
c12c(ncn1C)n(C)c(n(C)c2=O)=O
c12c(ncn1C)n(C)c(=O)n(c2=O)C
c12c(ncn1C)n(C)c(=O)n(C)c2=O
c12c(n(c(n(c2=O)C)=O)C)ncn1C
c12c(n(c(n(C)c2=O)=O)C)ncn1C
c12c(n(c(=O)n(c2=O)C)C)ncn1C
c12c(n(c(=O)n(C)c2=O)C)ncn1C
c12c(n(C)c(n(c2=O)C)=O)ncn1C
c12c(n(C)c(n(C)c2=O)=O)ncn1C
c12c(n(C)c(=O)n(c2=O)C)ncn1C
c12c(n(C)c(=O)n(C)c2=O)ncn1C
c1(c2ncn1C)c(=O)n(c(=O)n2C)C
c1(c2ncn1C)c(=O)n(c(n2C)=O)C
c1(c2ncn1C)c(=O)n(C)c(=O)n2C
c1(c2ncn1C)c(=O)n(C)c(n2C)=O
c1(c2ncn1C)c(n(c(=O)n2C)C)=O
c1(c2ncn1C)c(n(c(n2C)=O)C)=O
c1(c2ncn1C)c(n(C)c(=O)n2C)=O
c1(c2ncn1C)c(n(C)c(n2C)=O)=O
c1(c(ncn1C)n2C)c(=O)n(c2=O)C
c1(c(ncn1C)n2C)c(=O)n(C)c2=O
c1(c(ncn1C)n2C)c(n(c2=O)C)=O
c1(c(ncn1C)n2C)c(n(C)c2=O)=O
c1(c(ncn1C)n(c2=O)C)c(=O)n2C
c1(c(ncn1C)n(c2=O)C)c(n2C)=O
c1(c(ncn1C)n(c(n2C)=O)C)c2=O
c1(c(ncn1C)n(c(=O)n2C)C)c2=O
c1(c(ncn1C)n(C)c2=O)c(=O)n2C
c1(c(ncn1C)n(C)c2=O)c(n2C)=O
c1(c(ncn1C)n(C)c(n2C)=O)c2=O
c1(c(ncn1C)n(C)c(=O)n2C)c2=O
c1(c(n2C)ncn1C)c(=O)n(c2=O)C
c1(c(n2C)ncn1C)c(=O)n(C)c2=O
c1(c(n2C)ncn1C)c(n(c2=O)C)=O
c1(c(n2C)ncn1C)c(n(C)c2=O)=O
c1(c(n(c2=O)C)ncn1C)c(=O)n2C
c1(c(n(c2=O)C)ncn1C)c(n2C)=O
c1(c(n(c(n2C)=O)C)ncn1C)c2=O
c1(c(n(c(=O)n2C)C)ncn1C)c2=O
c1(c(n(C)c2=O)ncn1C)c(=O)n2C
c1(c(n(C)c2=O)ncn1C)c(n2C)=O
c1(c(n(C)c(n2C)=O)ncn1C)c2=O
c1(c(n(C)c(=O)n2C)ncn1C)c2=O
c1(c2=O)c(ncn1C)n(c(n2C)=O)C
c1(c2=O)c(ncn1C)n(c(=O)n2C)C
c1(c2=O)c(ncn1C)n(C)c(n2C)=O
c1(c2=O)c(ncn1C)n(C)c(=O)n2C
c1(c2=O)c(n(c(n2C)=O)C)ncn1C
c1(c2=O)c(n(c(=O)n2C)C)ncn1C
c1(c2=O)c(n(C)c(n2C)=O)ncn1C
c1(c2=O)c(n(C)c(=O)n2C)ncn1C
c1(c(=O)n2C)c(ncn1C)n(c2=O)C
c1(c(=O)n2C)c(ncn1C)n(C)c2=O
c1(c(=O)n2C)c(n(c2=O)C)ncn1C
c1(c(=O)n2C)c(n(C)c2=O)ncn1C
c1(c(=O)n(c2=O)C)c(ncn1C)n2C
c1(c(=O)n(c2=O)C)c(n2C)ncn1C
c1(c(=O)n(c(=O)n2C)C)c2ncn1C
c1(c(=O)n(c(n2C)=O)C)c2ncn1C
c1(c(=O)n(C)c2=O)c(ncn1C)n2C
c1(c(=O)n(C)c2=O)c(n2C)ncn1C
c1(c(=O)n(C)c(=O)n2C)c2ncn1C
c1(c(=O)n(C)c(n2C)=O)c2ncn1C
c1(c(n2C)=O)c(ncn1C)n(c2=O)C
c1(c(n2C)=O)c(ncn1C)n(C)c2=O
c1(c(n2C)=O)c(n(c2=O)C)ncn1C
c1(c(n2C)=O)c(n(C)c2=O)ncn1C
c1(c(n(c2=O)C)=O)c(ncn1C)n2C
c1(c(n(c2=O)C)=O)c(n2C)ncn1C
c1(c(n(c(=O)n2C)C)=O)c2ncn1C
c1(c(n(c(n2C)=O)C)=O)c2ncn1C
c1(c(n(C)c2=O)=O)c(ncn1C)n2C
c1(c(n(C)c2=O)=O)c(n2C)ncn1C
c1(c(n(C)c(=O)n2C)=O)c2ncn1C
c1(c(n(C)c(n2C)=O)=O)c2ncn1C
c12c(=O)n(c(=O)n(c1ncn2C)C)C
c12c(=O)n(c(=O)n(C)c1ncn2C)C
c12c(=O)n(c(n(c1ncn2C)C)=O)C
c12c(=O)n(c(n(C)c1ncn2C)=O)C
c12c(=O)n(C)c(=O)n(c1ncn2C)C
c12c(=O)n(C)c(=O)n(C)c1ncn2C
c12c(=O)n(C)c(n(c1ncn2C)C)=O
c12c(=O)n(C)c(n(C)c1ncn2C)=O
c12c(n(c(=O)n(c1ncn2C)C)C)=O
c12c(n(c(=O)n(C)c1ncn2C)C)=O
c12c(n(c(n(c1ncn2C)C)=O)C)=O
c12c(n(c(n(C)c1ncn2C)=O)C)=O
c12c(n(C)c(=O)n(c1ncn2C)C)=O
c12c(n(C)c(=O)n(C)c1ncn2C)=O
c12c(n(C)c(n(c1ncn2C)C)=O)=O
c12c(n(C)c(n(C)c1ncn2C)=O)=O
c12n(C)cnc1n(c(n(c2=O)C)=O)C
c12n(C)cnc1n(c(n(C)c2=O)=O)C
c12n(C)cnc1n(c(=O)n(c2=O)C)C
c12n(C)cnc1n(c(=O)n(C)c2=O)C
c12n(C)cnc1n(C)c(n(c2=O)C)=O
c12n(C)cnc1n(C)c(n(C)c2=O)=O
c12n(C)cnc1n(C)c(=O)n(c2=O)C
c12n(C)cnc1n(C)c(=O)n(C)c2=O
c12n(cnc1n(c(n(c2=O)C)=O)C)C
c12n(cnc1n(c(n(C)c2=O)=O)C)C
c12n(cnc1n(c(=O)n(c2=O)C)C)C
c12n(cnc1n(c(=O)n(C)c2=O)C)C
c12n(cnc1n(C)c(n(c2=O)C)=O)C
c12n(cnc1n(C)c(n(C)c2=O)=O)C
c12n(cnc1n(C)c(=O)n(c2=O)C)C
c12n(cnc1n(C)c(=O)n(C)c2=O)C
c1(n2C)c(=O)n(c(=O)n(c1nc2)C)C
c1(n2C)c(=O)n(c(=O)n(C)c1nc2)C
c1(n2C)c(=O)n(c(n(c1nc2)C)=O)C
c1(n2C)c(=O)n(c(n(C)c1nc2)=O)C
c1(n2C)c(=O)n(C)c(=O)n(c1nc2)C
c1(n2C)c(=O)n(C)c(=O)n(C)c1nc2
c1(n2C)c(=O)n(C)c(n(c1nc2)C)=O
c1(n2C)c(=O)n(C)c(n(C)c1nc2)=O
c1(n2C)c(n(c(=O)n(c1nc2)C)C)=O
c1(n2C)c(n(c(=O)n(C)c1nc2)C)=O
c1(n2C)c(n(c(n(c1nc2)C)=O)C)=O
c1(n2C)c(n(c(n(C)c1nc2)=O)C)=O
c1(n2C)c(n(C)c(=O)n(c1nc2)C)=O
c1(n2C)c(n(C)c(=O)n(C)c1nc2)=O
c1(n2C)c(n(C)c(n(c1nc2)C)=O)=O
c1(n2C)c(n(C)c(n(C)c1nc2)=O)=O
c1(n(C)cnc1n2C)c(=O)n(c2=O)C
c1(n(C)cnc1n2C)c(=O)n(C)c2=O
c1(n(C)cnc1n2C)c(n(c2=O)C)=O
c1(n(C)cnc1n2C)c(n(C)c2=O)=O
c1(n(C)cnc1n(c2=O)C)c(=O)n2C
c1(n(C)cnc1n(c2=O)C)c(n2C)=O
c1(n(C)cnc1n(c(n2C)=O)C)c2=O
c1(n(C)cnc1n(c(=O)n2C)C)c2=O
c1(n(C)cnc1n(C)c2=O)c(=O)n2C
c1(n(C)cnc1n(C)c2=O)c(n2C)=O
c1(n(C)cnc1n(C)c(n2C)=O)c2=O
c1(n(C)cnc1n(C)c(=O)n2C)c2=O
c1(n(cnc1n2C)C)c(=O)n(c2=O)C
c1(n(cnc1n2C)C)c(=O)n(C)c2=O
c1(n(cnc1n2C)C)c(n(c2=O)C)=O
c1(n(cnc1n2C)C)c(n(C)c2=O)=O
c1(n(cnc1n(c2=O)C)C)c(=O)n2C
c1(n(cnc1n(c2=O)C)C)c(n2C)=O
c1(n(cnc1n(c(n2C)=O)C)C)c2=O
c1(n(cnc1n(c(=O)n2C)C)C)c2=O
c1(n(cnc1n(C)c2=O)C)c(=O)n2C
c1(n(cnc1n(C)c2=O)C)c(n2C)=O
c1(n(cnc1n(C)c(n2C)=O)C)c2=O
c1(n(cnc1n(C)c(=O)n2C)C)c2=O
c1(c2=O)n(C)cnc1n(c(n2C)=O)C
c1(c2=O)n(C)cnc1n(c(=O)n2C)C
c1(c2=O)n(C)cnc1n(C)c(n2C)=O
c1(c2=O)n(C)cnc1n(C)c(=O)n2C
c1(c2=O)n(cnc1n(c(n2C)=O)C)C
c1(c2=O)n(cnc1n(c(=O)n2C)C)C
c1(c2=O)n(cnc1n(C)c(n2C)=O)C
c1(c2=O)n(cnc1n(C)c(=O)n2C)C
c1(c(=O)n2C)n(C)cnc1n(c2=O)C
c1(c(=O)n2C)n(C)cnc1n(C)c2=O
c1(c(=O)n2C)n(cnc1n(c2=O)C)C
c1(c(=O)n2C)n(cnc1n(C)c2=O)C
c1(c(=O)n(c2=O)C)n(C)cnc1n2C
c1(c(=O)n(c2=O)C)n(cnc1n2C)C
c1(c(=O)n(c(=O)n2C)C)n(C)cnc21
c1(c(=O)n(c(=O)n2C)C)n(C)cnc12
c1(c(=O)n(c(=O)n2C)C)n(cnc21)C
c1(c(=O)n(c(=O)n2C)C)n(cnc12)C
c1(c(=O)n(c(n2C)=O)C)n(C)cnc21
c1(c(=O)n(c(n2C)=O)C)n(C)cnc12
c1(c(=O)n(c(n2C)=O)C)n(cnc21)C
c1(c(=O)n(c(n2C)=O)C)n(cnc12)C
c1(c(=O)n(C)c2=O)n(C)cnc1n2C
c1(c(=O)n(C)c2=O)n(cnc1n2C)C
c1(c(=O)n(C)c(=O)n2C)n(C)cnc21
c1(c(=O)n(C)c(=O)n2C)n(C)cnc12
c1(c(=O)n(C)c(=O)n2C)n(cnc21)C
c1(c(=O)n(C)c(=O)n2C)n(cnc12)C
c1(c(=O)n(C)c(n2C)=O)n(C)cnc21
c1(c(=O)n(C)c(n2C)=O)n(C)cnc12
c1(c(=O)n(C)c(n2C)=O)n(cnc21)C
c1(c(=O)n(C)c(n2C)=O)n(cnc12)C
c1(c(n2C)=O)n(C)cnc1n(c2=O)C
c1(c(n2C)=O)n(C)cnc1n(C)c2=O
c1(c(n2C)=O)n(cnc1n(c2=O)C)C
c1(c(n2C)=O)n(cnc1n(C)c2=O)C
c1(c(n(c2=O)C)=O)n(C)cnc1n2C
c1(c(n(c2=O)C)=O)n(cnc1n2C)C
c1(c(n(c(=O)n2C)C)=O)n(C)cnc21
c1(c(n(c(=O)n2C)C)=O)n(C)cnc12
c1(c(n(c(=O)n2C)C)=O)n(cnc21)C
c1(c(n(c(=O)n2C)C)=O)n(cnc12)C
c1(c(n(c(n2C)=O)C)=O)n(C)cnc21
c1(c(n(c(n2C)=O)C)=O)n(C)cnc12
c1(c(n(c(n2C)=O)C)=O)n(cnc21)C
c1(c(n(c(n2C)=O)C)=O)n(cnc12)C
c1(c(n(C)c2=O)=O)n(C)cnc1n2C
c1(c(n(C)c2=O)=O)n(cnc1n2C)C
c1(c(n(C)c(=O)n2C)=O)n(C)cnc21
c1(c(n(C)c(=O)n2C)=O)n(C)cnc12
c1(c(n(C)c(=O)n2C)=O)n(cnc21)C
c1(c(n(C)c(=O)n2C)=O)n(cnc12)C
c1(c(n(C)c(n2C)=O)=O)n(C)cnc21
c1(c(n(C)c(n2C)=O)=O)n(C)cnc12
c1(c(n(C)c(n2C)=O)=O)n(cnc21)C
c1(c(n(C)c(n2C)=O)=O)n(cnc12)C
c12c(ncn2C)n(c(n(c1=O)C)=O)C
c12c(ncn2C)n(c(n(C)c1=O)=O)C
c12c(ncn2C)n(c(=O)n(c1=O)C)C
c12c(ncn2C)n(c(=O)n(C)c1=O)C
c12c(ncn2C)n(C)c(n(c1=O)C)=O
c12c(ncn2C)n(C)c(n(C)c1=O)=O
c12c(ncn2C)n(C)c(=O)n(c1=O)C
c12c(ncn2C)n(C)c(=O)n(C)c1=O
c12c(n(c(n(c1=O)C)=O)C)ncn2C
c12c(n(c(n(C)c1=O)=O)C)ncn2C
c12c(n(c(=O)n(c1=O)C)C)ncn2C
c12c(n(c(=O)n(C)c1=O)C)ncn2C
c12c(n(C)c(n(c1=O)C)=O)ncn2C
c12c(n(C)c(n(C)c1=O)=O)ncn2C
c12c(n(C)c(=O)n(c1=O)C)ncn2C
c12c(n(C)c(=O)n(C)c1=O)ncn2C
c12n(C)cnc2n(c(n(c1=O)C)=O)C
c12n(C)cnc2n(c(n(C)c1=O)=O)C
c12n(C)cnc2n(c(=O)n(c1=O)C)C
c12n(C)cnc2n(c(=O)n(C)c1=O)C
c12n(C)cnc2n(C)c(n(c1=O)C)=O
c12n(C)cnc2n(C)c(n(C)c1=O)=O
c12n(C)cnc2n(C)c(=O)n(c1=O)C
c12n(C)cnc2n(C)c(=O)n(C)c1=O
c12n(cnc2n(c(n(c1=O)C)=O)C)C
c12n(cnc2n(c(n(C)c1=O)=O)C)C
c12n(cnc2n(c(=O)n(c1=O)C)C)C
c12n(cnc2n(c(=O)n(C)c1=O)C)C
c12n(cnc2n(C)c(n(c1=O)C)=O)C
c12n(cnc2n(C)c(n(C)c1=O)=O)C
c12n(cnc2n(C)c(=O)n(c1=O)C)C
c12n(cnc2n(C)c(=O)n(C)c1=O)C
c1(n2C)c(nc2)n(c(n(c1=O)C)=O)C
c1(n2C)c(nc2)n(c(n(C)c1=O)=O)C
c1(n2C)c(nc2)n(c(=O)n(c1=O)C)C
c1(n2C)c(nc2)n(c(=O)n(C)c1=O)C
c1(n2C)c(nc2)n(C)c(n(c1=O)C)=O
c1(n2C)c(nc2)n(C)c(n(C)c1=O)=O
c1(n2C)c(nc2)n(C)c(=O)n(c1=O)C
c1(n2C)c(nc2)n(C)c(=O)n(C)c1=O
c1(n2C)c(n(c(n(c1=O)C)=O)C)nc2
c1(n2C)c(n(c(n(C)c1=O)=O)C)nc2
c1(n2C)c(n(c(=O)n(c1=O)C)C)nc2
c1(n2C)c(n(c(=O)n(C)c1=O)C)nc2
c1(n2C)c(n(C)c(n(c1=O)C)=O)nc2
c1(n2C)c(n(C)c(n(C)c1=O)=O)nc2
c1(n2C)c(n(C)c(=O)n(c1=O)C)nc2
c1(n2C)c(n(C)c(=O)n(C)c1=O)nc2
c1(c2n(c(n(c1=O)C)=O)C)n(C)cn2
c1(c2n(c(n(c1=O)C)=O)C)n(cn2)C
c1(c2n(c(n(C)c1=O)=O)C)n(C)cn2
c1(c2n(c(n(C)c1=O)=O)C)n(cn2)C
c1(c2n(c(=O)n(c1=O)C)C)n(C)cn2
c1(c2n(c(=O)n(c1=O)C)C)n(cn2)C
c1(c2n(c(=O)n(C)c1=O)C)n(C)cn2
c1(c2n(c(=O)n(C)c1=O)C)n(cn2)C
c1(c2n(C)c(n(c1=O)C)=O)n(C)cn2
c1(c2n(C)c(n(c1=O)C)=O)n(cn2)C
c1(c2n(C)c(n(C)c1=O)=O)n(C)cn2
c1(c2n(C)c(n(C)c1=O)=O)n(cn2)C
c1(c2n(C)c(=O)n(c1=O)C)n(C)cn2
c1(c2n(C)c(=O)n(c1=O)C)n(cn2)C
c1(c2n(C)c(=O)n(C)c1=O)n(C)cn2
c1(c2n(C)c(=O)n(C)c1=O)n(cn2)C
c1(=O)n(c(=O)n(c2c1n(C)cn2)C)C
c1(=O)n(c(=O)n(c2c1n(cn2)C)C)C
c1(=O)n(c(=O)n(c2ncn(C)c21)C)C
c1(=O)n(c(=O)n(c2ncn(C)c12)C)C
c1(=O)n(c(=O)n(c2ncn(c21)C)C)C
c1(=O)n(c(=O)n(c2ncn(c12)C)C)C
c1(=O)n(c(=O)n(c(ncn2C)c21)C)C
c1(=O)n(c(=O)n(c(ncn2C)c12)C)C
c1(=O)n(c(=O)n(c(c1n2C)nc2)C)C
c1(=O)n(c(=O)n(C)c2c1n(C)cn2)C
c1(=O)n(c(=O)n(C)c2c1n(cn2)C)C
c1(=O)n(c(=O)n(C)c2ncn(C)c21)C
c1(=O)n(c(=O)n(C)c2ncn(C)c12)C
c1(=O)n(c(=O)n(C)c2ncn(c21)C)C
c1(=O)n(c(=O)n(C)c2ncn(c12)C)C
c1(=O)n(c(=O)n(C)c(ncn2C)c21)C
c1(=O)n(c(=O)n(C)c(ncn2C)c12)C
c1(=O)n(c(=O)n(C)c(c1n2C)nc2)C
c1(=O)n(c(n(c2c1n(C)cn2)C)=O)C
c1(=O)n(c(n(c2c1n(cn2)C)C)=O)C
c1(=O)n(c(n(c2ncn(C)c21)C)=O)C
c1(=O)n(c(n(c2ncn(C)c12)C)=O)C
c1(=O)n(c(n(c2ncn(c21)C)C)=O)C
c1(=O)n(c(n(c2ncn(c12)C)C)=O)C
c1(=O)n(c(n(c(ncn2C)c21)C)=O)C
c1(=O)n(c(n(c(ncn2C)c12)C)=O)C
c1(=O)n(c(n(c(c1n2C)nc2)C)=O)C
c1(=O)n(c(n(C)c2c1n(C)cn2)=O)C
c1(=O)n(c(n(C)c2c1n(cn2)C)=O)C
c1(=O)n(c(n(C)c2ncn(C)c21)=O)C
c1(=O)n(c(n(C)c2ncn(C)c12)=O)C
c1(=O)n(c(n(C)c2ncn(c21)C)=O)C
c1(=O)n(c(n(C)c2ncn(c12)C)=O)C
c1(=O)n(c(n(C)c(ncn2C)c21)=O)C
c1(=O)n(c(n(C)c(ncn2C)c12)=O)C
c1(=O)n(c(n(C)c(c1n2C)nc2)=O)C
c1(=O)n(C)c(=O)n(c2c1n(C)cn2)C
c1(=O)n(C)c(=O)n(c2c1n(cn2)C)C
c1(=O)n(C)c(=O)n(c2ncn(C)c21)C
c1(=O)n(C)c(=O)n(c2ncn(C)c12)C
c1(=O)n(C)c(=O)n(c2ncn(c21)C)C
c1(=O)n(C)c(=O)n(c2ncn(c12)C)C
c1(=O)n(C)c(=O)n(c(ncn2C)c21)C
c1(=O)n(C)c(=O)n(c(ncn2C)c12)C
c1(=O)n(C)c(=O)n(c(c1n2C)nc2)C
c1(=O)n(C)c(=O)n(C)c2c1n(C)cn2
c1(=O)n(C)c(=O)n(C)c2c1n(cn2)C
c1(=O)n(C)c(=O)n(C)c2ncn(C)c21
c1(=O)n(C)c(=O)n(C)c2ncn(C)c12
c1(=O)n(C)c(=O)n(C)c2ncn(c21)C
c1(=O)n(C)c(=O)n(C)c2ncn(c12)C
c1(=O)n(C)c(=O)n(C)c(ncn2C)c21
c1(=O)n(C)c(=O)n(C)c(ncn2C)c12
c1(=O)n(C)c(=O)n(C)c(c1n2C)nc2
c1(=O)n(C)c(n(c2c1n(C)cn2)C)=O
c1(=O)n(C)c(n(c2c1n(cn2)C)C)=O
c1(=O)n(C)c(n(c2ncn(C)c21)C)=O
c1(=O)n(C)c(n(c2ncn(C)c12)C)=O
c1(=O)n(C)c(n(c2ncn(c21)C)C)=O
c1(=O)n(C)c(n(c2ncn(c12)C)C)=O
c1(=O)n(C)c(n(c(ncn2C)c21)C)=O
c1(=O)n(C)c(n(c(ncn2C)c12)C)=O
c1(=O)n(C)c(n(c(c1n2C)nc2)C)=O
c1(=O)n(C)c(n(C)c2c1n(C)cn2)=O
c1(=O)n(C)c(n(C)c2c1n(cn2)C)=O
c1(=O)n(C)c(n(C)c2ncn(C)c21)=O
c1(=O)n(C)c(n(C)c2ncn(C)c12)=O
c1(=O)n(C)c(n(C)c2ncn(c21)C)=O
c1(=O)n(C)c(n(C)c2ncn(c12)C)=O
c1(=O)n(C)c(n(C)c(ncn2C)c21)=O
c1(=O)n(C)c(n(C)c(ncn2C)c12)=O
c1(=O)n(C)c(n(C)c(c1n2C)nc2)=O
c1(n(c(=O)n(c2c1n(C)cn2)C)C)=O
c1(n(c(=O)n(c2c1n(cn2)C)C)C)=O
c1(n(c(=O)n(c2ncn(C)c21)C)C)=O
c1(n(c(=O)n(c2ncn(C)c12)C)C)=O
c1(n(c(=O)n(c2ncn(c21)C)C)C)=O
c1(n(c(=O)n(c2ncn(c12)C)C)C)=O
c1(n(c(=O)n(c(ncn2C)c21)C)C)=O
c1(n(c(=O)n(c(ncn2C)c12)C)C)=O
c1(n(c(=O)n(c(c1n2C)nc2)C)C)=O
c1(n(c(=O)n(C)c2c1n(C)cn2)C)=O
c1(n(c(=O)n(C)c2c1n(cn2)C)C)=O
c1(n(c(=O)n(C)c2ncn(C)c21)C)=O
c1(n(c(=O)n(C)c2ncn(C)c12)C)=O
c1(n(c(=O)n(C)c2ncn(c21)C)C)=O
c1(n(c(=O)n(C)c2ncn(c12)C)C)=O
c1(n(c(=O)n(C)c(ncn2C)c21)C)=O
c1(n(c(=O)n(C)c(ncn2C)c12)C)=O
c1(n(c(=O)n(C)c(c1n2C)nc2)C)=O
c1(n(c(n(c2c1n(C)cn2)C)=O)C)=O
c1(n(c(n(c2c1n(cn2)C)C)=O)C)=O
c1(n(c(n(c2ncn(C)c21)C)=O)C)=O
c1(n(c(n(c2ncn(C)c12)C)=O)C)=O
c1(n(c(n(c2ncn(c21)C)C)=O)C)=O
c1(n(c(n(c2ncn(c12)C)C)=O)C)=O
c1(n(c(n(c(ncn2C)c21)C)=O)C)=O
c1(n(c(n(c(ncn2C)c12)C)=O)C)=O
c1(n(c(n(c(c1n2C)nc2)C)=O)C)=O
c1(n(c(n(C)c2c1n(C)cn2)=O)C)=O
c1(n(c(n(C)c2c1n(cn2)C)=O)C)=O
c1(n(c(n(C)c2ncn(C)c21)=O)C)=O
c1(n(c(n(C)c2ncn(C)c12)=O)C)=O
c1(n(c(n(C)c2ncn(c21)C)=O)C)=O
c1(n(c(n(C)c2ncn(c12)C)=O)C)=O
c1(n(c(n(C)c(ncn2C)c21)=O)C)=O
c1(n(c(n(C)c(ncn2C)c12)=O)C)=O
c1(n(c(n(C)c(c1n2C)nc2)=O)C)=O
c1(n(C)c(=O)n(c2c1n(C)cn2)C)=O
c1(n(C)c(=O)n(c2c1n(cn2)C)C)=O
c1(n(C)c(=O)n(c2ncn(C)c21)C)=O
c1(n(C)c(=O)n(c2ncn(C)c12)C)=O
c1(n(C)c(=O)n(c2ncn(c21)C)C)=O
c1(n(C)c(=O)n(c2ncn(c12)C)C)=O
c1(n(C)c(=O)n(c(ncn2C)c21)C)=O
c1(n(C)c(=O)n(c(ncn2C)c12)C)=O
c1(n(C)c(=O)n(c(c1n2C)nc2)C)=O
c1(n(C)c(=O)n(C)c2c1n(C)cn2)=O
c1(n(C)c(=O)n(C)c2c1n(cn2)C)=O
c1(n(C)c(=O)n(C)c2ncn(C)c21)=O
c1(n(C)c(=O)n(C)c2ncn(C)c12)=O
c1(n(C)c(=O)n(C)c2ncn(c21)C)=O
c1(n(C)c(=O)n(C)c2ncn(c12)C)=O
c1(n(C)c(=O)n(C)c(ncn2C)c21)=O
c1(n(C)c(=O)n(C)c(ncn2C)c12)=O
c1(n(C)c(=O)n(C)c(c1n2C)nc2)=O
c1(n(C)c(n(c2c1n(C)cn2)C)=O)=O
c1(n(C)c(n(c2c1n(cn2)C)C)=O)=O
c1(n(C)c(n(c2ncn(C)c21)C)=O)=O
c1(n(C)c(n(c2ncn(C)c12)C)=O)=O
c1(n(C)c(n(c2ncn(c21)C)C)=O)=O
c1(n(C)c(n(c2ncn(c12)C)C)=O)=O
c1(n(C)c(n(c(ncn2C)c21)C)=O)=O
c1(n(C)c(n(c(ncn2C)c12)C)=O)=O
c1(n(C)c(n(c(c1n2C)nc2)C)=O)=O
c1(n(C)c(n(C)c2c1n(C)cn2)=O)=O
c1(n(C)c(n(C)c2c1n(cn2)C)=O)=O
c1(n(C)c(n(C)c2ncn(C)c21)=O)=O
c1(n(C)c(n(C)c2ncn(C)c12)=O)=O
c1(n(C)c(n(C)c2ncn(c21)C)=O)=O
c1(n(C)c(n(C)c2ncn(c12)C)=O)=O
c1(n(C)c(n(C)c(ncn2C)c21)=O)=O
c1(n(C)c(n(C)c(ncn2C)c12)=O)=O
c1(n(C)c(n(C)c(c1n2C)nc2)=O)=O
c1(c2c(ncn2C)n(c(n1C)=O)C)=O
c1(c2c(ncn2C)n(c(=O)n1C)C)=O
c1(c2c(ncn2C)n(C)c(n1C)=O)=O
c1(c2c(ncn2C)n(C)c(=O)n1C)=O
c1(c2c(n(c(n1C)=O)C)ncn2C)=O
c1(c2c(n(c(=O)n1C)C)ncn2C)=O
c1(c2c(n(C)c(n1C)=O)ncn2C)=O
c1(c2c(n(C)c(=O)n1C)ncn2C)=O
c1(c2n(C)cnc2n(c(n1C)=O)C)=O
c1(c2n(C)cnc2n(c(=O)n1C)C)=O
c1(c2n(C)cnc2n(C)c(n1C)=O)=O
c1(c2n(C)cnc2n(C)c(=O)n1C)=O
c1(c2n(cnc2n(c(n1C)=O)C)C)=O
c1(c2n(cnc2n(c(=O)n1C)C)C)=O
c1(c2n(cnc2n(C)c(n1C)=O)C)=O
c1(c2n(cnc2n(C)c(=O)n1C)C)=O
c1(c(n2C)c(nc2)n(c(n1C)=O)C)=O
c1(c(n2C)c(nc2)n(c(=O)n1C)C)=O
c1(c(n2C)c(nc2)n(C)c(n1C)=O)=O
c1(c(n2C)c(nc2)n(C)c(=O)n1C)=O
c1(c(n2C)c(n(c(n1C)=O)C)nc2)=O
c1(c(n2C)c(n(c(=O)n1C)C)nc2)=O
c1(c(n2C)c(n(C)c(n1C)=O)nc2)=O
c1(c(n2C)c(n(C)c(=O)n1C)nc2)=O
c1(c(c2n(c(n1C)=O)C)n(C)cn2)=O
c1(c(c2n(c(n1C)=O)C)n(cn2)C)=O
c1(c(c2n(c(=O)n1C)C)n(C)cn2)=O
c1(c(c2n(c(=O)n1C)C)n(cn2)C)=O
c1(c(c2n(C)c(n1C)=O)n(C)cn2)=O
c1(c(c2n(C)c(n1C)=O)n(cn2)C)=O
c1(c(c2n(C)c(=O)n1C)n(C)cn2)=O
c1(c(c2n(C)c(=O)n1C)n(cn2)C)=O
c1(=O)c2c(ncn2C)n(c(n1C)=O)C
c1(=O)c2c(ncn2C)n(c(=O)n1C)C
c1(=O)c2c(ncn2C)n(C)c(n1C)=O
c1(=O)c2c(ncn2C)n(C)c(=O)n1C
c1(=O)c2c(n(c(n1C)=O)C)ncn2C
c1(=O)c2c(n(c(=O)n1C)C)ncn2C
c1(=O)c2c(n(C)c(n1C)=O)ncn2C
c1(=O)c2c(n(C)c(=O)n1C)ncn2C
c1(=O)c2n(C)cnc2n(c(n1C)=O)C
c1(=O)c2n(C)cnc2n(c(=O)n1C)C
c1(=O)c2n(C)cnc2n(C)c(n1C)=O
c1(=O)c2n(C)cnc2n(C)c(=O)n1C
c1(=O)c2n(cnc2n(c(n1C)=O)C)C
c1(=O)c2n(cnc2n(c(=O)n1C)C)C
c1(=O)c2n(cnc2n(C)c(n1C)=O)C
c1(=O)c2n(cnc2n(C)c(=O)n1C)C
c1(=O)c(n2C)c(nc2)n(c(n1C)=O)C
c1(=O)c(n2C)c(nc2)n(c(=O)n1C)C
c1(=O)c(n2C)c(nc2)n(C)c(n1C)=O
c1(=O)c(n2C)c(nc2)n(C)c(=O)n1C
c1(=O)c(n2C)c(n(c(n1C)=O)C)nc2
c1(=O)c(n2C)c(n(c(=O)n1C)C)nc2
c1(=O)c(n2C)c(n(C)c(n1C)=O)nc2
c1(=O)c(n2C)c(n(C)c(=O)n1C)nc2
c1(=O)c(c2n(c(n1C)=O)C)n(C)cn2
c1(=O)c(c2n(c(n1C)=O)C)n(cn2)C
c1(=O)c(c2n(c(=O)n1C)C)n(C)cn2
c1(=O)c(c2n(c(=O)n1C)C)n(cn2)C
c1(=O)c(c2n(C)c(n1C)=O)n(C)cn2
c1(=O)c(c2n(C)c(n1C)=O)n(cn2)C
c1(=O)c(c2n(C)c(=O)n1C)n(C)cn2
c1(=O)c(c2n(C)c(=O)n1C)n(cn2)C
O=c1n(c(=O)n(c2c1n(C)cn2)C)C
O=c1n(c(=O)n(c2c1n(cn2)C)C)C
O=c1n(c(=O)n(c2ncn(C)c21)C)C
O=c1n(c(=O)n(c2ncn(C)c12)C)C
O=c1n(c(=O)n(c2ncn(c21)C)C)C
O=c1n(c(=O)n(c2ncn(c12)C)C)C
O=c1n(c(=O)n(c(ncn2C)c21)C)C
O=c1n(c(=O)n(c(ncn2C)c12)C)C
O=c1n(c(=O)n(c(c1n2C)nc2)C)C
O=c1n(c(=O)n(C)c2c1n(C)cn2)C
O=c1n(c(=O)n(C)c2c1n(cn2)C)C
O=c1n(c(=O)n(C)c2ncn(C)c21)C
O=c1n(c(=O)n(C)c2ncn(C)c12)C
O=c1n(c(=O)n(C)c2ncn(c21)C)C
O=c1n(c(=O)n(C)c2ncn(c12)C)C
O=c1n(c(=O)n(C)c(ncn2C)c21)C
O=c1n(c(=O)n(C)c(ncn2C)c12)C
O=c1n(c(=O)n(C)c(c1n2C)nc2)C
O=c1n(c(n(c2c1n(C)cn2)C)=O)C
O=c1n(c(n(c2c1n(cn2)C)C)=O)C
O=c1n(c(n(c2ncn(C)c21)C)=O)C
O=c1n(c(n(c2ncn(C)c12)C)=O)C
O=c1n(c(n(c2ncn(c21)C)C)=O)C
O=c1n(c(n(c2ncn(c12)C)C)=O)C
O=c1n(c(n(c(ncn2C)c21)C)=O)C
O=c1n(c(n(c(ncn2C)c12)C)=O)C
O=c1n(c(n(c(c1n2C)nc2)C)=O)C
O=c1n(c(n(C)c2c1n(C)cn2)=O)C
O=c1n(c(n(C)c2c1n(cn2)C)=O)C
O=c1n(c(n(C)c2ncn(C)c21)=O)C
O=c1n(c(n(C)c2ncn(C)c12)=O)C
O=c1n(c(n(C)c2ncn(c21)C)=O)C
O=c1n(c(n(C)c2ncn(c12)C)=O)C
O=c1n(c(n(C)c(ncn2C)c21)=O)C
O=c1n(c(n(C)c(ncn2C)c12)=O)C
O=c1n(c(n(C)c(c1n2C)nc2)=O)C
O=c1n(C)c(=O)n(c2c1n(C)cn2)C
O=c1n(C)c(=O)n(c2c1n(cn2)C)C
O=c1n(C)c(=O)n(c2ncn(C)c21)C
O=c1n(C)c(=O)n(c2ncn(C)c12)C
O=c1n(C)c(=O)n(c2ncn(c21)C)C
O=c1n(C)c(=O)n(c2ncn(c12)C)C
O=c1n(C)c(=O)n(c(ncn2C)c21)C
O=c1n(C)c(=O)n(c(ncn2C)c12)C
O=c1n(C)c(=O)n(c(c1n2C)nc2)C
O=c1n(C)c(=O)n(C)c2c1n(C)cn2
O=c1n(C)c(=O)n(C)c2c1n(cn2)C
O=c1n(C)c(=O)n(C)c2ncn(C)c21
O=c1n(C)c(=O)n(C)c2ncn(C)c12
O=c1n(C)c(=O)n(C)c2ncn(c21)C
O=c1n(C)c(=O)n(C)c2ncn(c12)C
O=c1n(C)c(=O)n(C)c(ncn2C)c21
O=c1n(C)c(=O)n(C)c(ncn2C)c12
O=c1n(C)c(=O)n(C)c(c1n2C)nc2
O=c1n(C)c(n(c2c1n(C)cn2)C)=O
O=c1n(C)c(n(c2c1n(cn2)C)C)=O
O=c1n(C)c(n(c2ncn(C)c21)C)=O
O=c1n(C)c(n(c2ncn(C)c12)C)=O
O=c1n(C)c(n(c2ncn(c21)C)C)=O
O=c1n(C)c(n(c2ncn(c12)C)C)=O
O=c1n(C)c(n(c(ncn2C)c21)C)=O
O=c1n(C)c(n(c(ncn2C)c12)C)=O
O=c1n(C)c(n(c(c1n2C)nc2)C)=O
O=c1n(C)c(n(C)c2c1n(C)cn2)=O
O=c1n(C)c(n(C)c2c1n(cn2)C)=O
O=c1n(C)c(n(C)c2ncn(C)c21)=O
O=c1n(C)c(n(C)c2ncn(C)c12)=O
O=c1n(C)c(n(C)c2ncn(c21)C)=O
O=c1n(C)c(n(C)c2ncn(c12)C)=O
O=c1n(C)c(n(C)c(ncn2C)c21)=O
O=c1n(C)c(n(C)c(ncn2C)c12)=O
O=c1n(C)c(n(C)c(c1n2C)nc2)=O
O=c1c2c(ncn2C)n(c(n1C)=O)C
O=c1c2c(ncn2C)n(c(=O)n1C)C
O=c1c2c(ncn2C)n(C)c(n1C)=O
O=c1c2c(ncn2C)n(C)c(=O)n1C
O=c1c2c(n(c(n1C)=O)C)ncn2C
O=c1c2c(n(c(=O)n1C)C)ncn2C
O=c1c2c(n(C)c(n1C)=O)ncn2C
O=c1c2c(n(C)c(=O)n1C)ncn2C
O=c1c2n(C)cnc2n(c(n1C)=O)C
O=c1c2n(C)cnc2n(c(=O)n1C)C
O=c1c2n(C)cnc2n(C)c(n1C)=O
O=c1c2n(C)cnc2n(C)c(=O)n1C
O=c1c2n(cnc2n(c(n1C)=O)C)C
O=c1c2n(cnc2n(c(=O)n1C)C)C
O=c1c2n(cnc2n(C)c(n1C)=O)C
O=c1c2n(cnc2n(C)c(=O)n1C)C
O=c1c(n2C)c(nc2)n(c(n1C)=O)C
O=c1c(n2C)c(nc2)n(c(=O)n1C)C
O=c1c(n2C)c(nc2)n(C)c(n1C)=O
O=c1c(n2C)c(nc2)n(C)c(=O)n1C
O=c1c(n2C)c(n(c(n1C)=O)C)nc2
O=c1c(n2C)c(n(c(=O)n1C)C)nc2
O=c1c(n2C)c(n(C)c(n1C)=O)nc2
O=c1c(n2C)c(n(C)c(=O)n1C)nc2
O=c1c(c2n(c(n1C)=O)C)n(C)cn2
O=c1c(c2n(c(n1C)=O)C)n(cn2)C
O=c1c(c2n(c(=O)n1C)C)n(C)cn2
O=c1c(c2n(c(=O)n1C)C)n(cn2)C
O=c1c(c2n(C)c(n1C)=O)n(C)cn2
O=c1c(c2n(C)c(n1C)=O)n(cn2)C
O=c1c(c2n(C)c(=O)n1C)n(C)cn2
O=c1c(c2n(C)c(=O)n1C)n(cn2)C
O=c(c1c2ncn1C)n(c(=O)n2C)C
O=c(c1c2ncn1C)n(c(n2C)=O)C
O=c(c1c2ncn1C)n(C)c(=O)n2C
O=c(c1c2ncn1C)n(C)c(n2C)=O
O=c(c1c(ncn1C)n2C)n(c2=O)C
O=c(c1c(ncn1C)n2C)n(C)c2=O
O=c(c1c(ncn1C)n(c2=O)C)n2C
O=c(c1c(ncn1C)n(C)c2=O)n2C
O=c(c1c(n2C)ncn1C)n(c2=O)C
O=c(c1c(n2C)ncn1C)n(C)c2=O
O=c(c1c(n(c2=O)C)ncn1C)n2C
O=c(c1c(n(C)c2=O)ncn1C)n2C
O=c(c1n2C)n(c(=O)n(c1nc2)C)C
O=c(c1n2C)n(c(=O)n(C)c1nc2)C
O=c(c1n2C)n(c(n(c1nc2)C)=O)C
O=c(c1n2C)n(c(n(C)c1nc2)=O)C
O=c(c1n2C)n(C)c(=O)n(c1nc2)C
O=c(c1n2C)n(C)c(=O)n(C)c1nc2
O=c(c1n2C)n(C)c(n(c1nc2)C)=O
O=c(c1n2C)n(C)c(n(C)c1nc2)=O
O=c(c1n(C)cnc1n2C)n(c2=O)C
O=c(c1n(C)cnc1n2C)n(C)c2=O
O=c(c1n(C)cnc1n(c2=O)C)n2C
O=c(c1n(C)cnc1n(C)c2=O)n2C
O=c(c1n(cnc1n2C)C)n(c2=O)C
O=c(c1n(cnc1n2C)C)n(C)c2=O
O=c(c1n(cnc1n(c2=O)C)C)n2C
O=c(c1n(cnc1n(C)c2=O)C)n2C
O=c(c(n1C)c2nc1)n(c(=O)n2C)C
O=c(c(n1C)c2nc1)n(c(n2C)=O)C
O=c(c(n1C)c2nc1)n(C)c(=O)n2C
O=c(c(n1C)c2nc1)n(C)c(n2C)=O
O=c(c(n1C)c(nc1)n2C)n(c2=O)C
O=c(c(n1C)c(nc1)n2C)n(C)c2=O
O=c(c(n1C)c(nc1)n(c2=O)C)n2C
O=c(c(n1C)c(nc1)n(C)c2=O)n2C
O=c(c(n1C)c(n2C)nc1)n(c2=O)C
O=c(c(n1C)c(n2C)nc1)n(C)c2=O
O=c(c(n1C)c(n(c2=O)C)nc1)n2C
O=c(c(n1C)c(n(C)c2=O)nc1)n2C
O=c(c(c1n2C)n(C)cn1)n(c2=O)C
O=c(c(c1n2C)n(C)cn1)n(C)c2=O
O=c(c(c1n2C)n(cn1)C)n(c2=O)C
O=c(c(c1n2C)n(cn1)C)n(C)c2=O
O=c(c(c1n(c2=O)C)n(C)cn1)n2C
O=c(c(c1n(c2=O)C)n(cn1)C)n2C
O=c(c(c1n(C)c2=O)n(C)cn1)n2C
O=c(c(c1n(C)c2=O)n(cn1)C)n2C
O=c(n1C)c2c(ncn2C)n(c1=O)C
O=c(n1C)c2c(ncn2C)n(C)c1=O
O=c(n1C)c2c(n(c1=O)C)ncn2C
O=c(n1C)c2c(n(C)c1=O)ncn2C
O=c(n1C)c2n(C)cnc2n(c1=O)C
O=c(n1C)c2n(C)cnc2n(C)c1=O
O=c(n1C)c2n(cnc2n(c1=O)C)C
O=c(n1C)c2n(cnc2n(C)c1=O)C
O=c(n1C)c(n2C)c(nc2)n(c1=O)C
O=c(n1C)c(n2C)c(nc2)n(C)c1=O
O=c(n1C)c(n2C)c(n(c1=O)C)nc2
O=c(n1C)c(n2C)c(n(C)c1=O)nc2
O=c(n1C)c(c2n(c1=O)C)n(C)cn2
O=c(n1C)c(c2n(c1=O)C)n(cn2)C
O=c(n1C)c(c2n(C)c1=O)n(C)cn2
O=c(n1C)c(c2n(C)c1=O)n(cn2)C
O=c(n(c1=O)C)c2c(ncn2C)n1C
O=c(n(c1=O)C)c2c(n1C)ncn2C
O=c(n(c1=O)C)c2n(C)cnc2n1C
O=c(n(c1=O)C)c2n(cnc2n1C)C
O=c(n(c1=O)C)c(n2C)c(nc2)n1C
O=c(n(c1=O)C)c(n2C)c(n1C)nc2
O=c(n(c1=O)C)c(c2n1C)n(C)cn2
O=c(n(c1=O)C)c(c2n1C)n(cn2)C
O=c(n(c(=O)n1C)C)c2c1ncn2C
O=c(n(c(=O)n1C)C)c2n(C)cnc12
O=c(n(c(=O)n1C)C)c2n(C)cnc21
O=c(n(c(=O)n1C)C)c2n(cnc12)C
O=c(n(c(=O)n1C)C)c2n(cnc21)C
O=c(n(c(=O)n1C)C)c(n2C)c1nc2
O=c(n(c(=O)n(c1ncn2C)C)C)c21
O=c(n(c(=O)n(c1ncn2C)C)C)c12
O=c(n(c(=O)n(C)c1ncn2C)C)c21
O=c(n(c(=O)n(C)c1ncn2C)C)c12
O=c(n(c(n1C)=O)C)c2c1ncn2C
O=c(n(c(n1C)=O)C)c2n(C)cnc12
O=c(n(c(n1C)=O)C)c2n(C)cnc21
O=c(n(c(n1C)=O)C)c2n(cnc12)C
O=c(n(c(n1C)=O)C)c2n(cnc21)C
O=c(n(c(n1C)=O)C)c(n2C)c1nc2
O=c(n(c(n(c1ncn2C)C)=O)C)c21
O=c(n(c(n(c1ncn2C)C)=O)C)c12
O=c(n(c(n(C)c1ncn2C)=O)C)c21
O=c(n(c(n(C)c1ncn2C)=O)C)c12
O=c(n(C)c1=O)c2c(ncn2C)n1C
O=c(n(C)c1=O)c2c(n1C)ncn2C
O=c(n(C)c1=O)c2n(C)cnc2n1C
O=c(n(C)c1=O)c2n(cnc2n1C)C
O=c(n(C)c1=O)c(n2C)c(nc2)n1C
O=c(n(C)c1=O)c(n2C)c(n1C)nc2
O=c(n(C)c1=O)c(c2n1C)n(C)cn2
O=c(n(C)c1=O)c(c2n1C)n(cn2)C
O=c(n(C)c(=O)n1C)c2c1ncn2C
O=c(n(C)c(=O)n1C)c2n(C)cnc12
O=c(n(C)c(=O)n1C)c2n(C)cnc21
O=c(n(C)c(=O)n1C)c2n(cnc12)C
O=c(n(C)c(=O)n1C)c2n(cnc21)C
O=c(n(C)c(=O)n1C)c(n2C)c1nc2
O=c(n(C)c(=O)n(c1ncn2C)C)c21
O=c(n(C)c(=O)n(c1ncn2C)C)c12
O=c(n(C)c(=O)n(C)c1ncn2C)c21
O=c(n(C)c(=O)n(C)c1ncn2C)c12
O=c(n(C)c(n1C)=O)c2c1ncn2C
O=c(n(C)c(n1C)=O)c2n(C)cnc12
O=c(n(C)c(n1C)=O)c2n(C)cnc21
O=c(n(C)c(n1C)=O)c2n(cnc12)C
O=c(n(C)c(n1C)=O)c2n(cnc21)C
O=c(n(C)c(n1C)=O)c(n2C)c1nc2
O=c(n(C)c(n(c1ncn2C)C)=O)c21
O=c(n(C)c(n(c1ncn2C)C)=O)c12
O=c(n(C)c(n(C)c1ncn2C)=O)c21
O=c(n(C)c(n(C)c1ncn2C)=O)c12
n1(c(=O)n(c2c(n(C)cn2)c1=O)C)C
n1(c(=O)n(c2c(n(cn2)C)c1=O)C)C
n1(c(=O)n(c2c(c1=O)n(C)cn2)C)C
n1(c(=O)n(c2c(c1=O)n(cn2)C)C)C
n1(c(=O)n(c2ncn(C)c2c1=O)C)C
n1(c(=O)n(c2ncn(c2c1=O)C)C)C
n1(c(=O)n(c(ncn2C)c2c1=O)C)C
n1(c(=O)n(c(c2c1=O)ncn2C)C)C
n1(c(=O)n(c(c(n2C)c1=O)nc2)C)C
n1(c(=O)n(c(c(c1=O)n2C)nc2)C)C
n1(c(=O)n(C)c2c(n(C)cn2)c1=O)C
n1(c(=O)n(C)c2c(n(cn2)C)c1=O)C
n1(c(=O)n(C)c2c(c1=O)n(C)cn2)C
n1(c(=O)n(C)c2c(c1=O)n(cn2)C)C
n1(c(=O)n(C)c2ncn(C)c2c1=O)C
n1(c(=O)n(C)c2ncn(c2c1=O)C)C
n1(c(=O)n(C)c(ncn2C)c2c1=O)C
n1(c(=O)n(C)c(c2c1=O)ncn2C)C
n1(c(=O)n(C)c(c(n2C)c1=O)nc2)C
n1(c(=O)n(C)c(c(c1=O)n2C)nc2)C
n1(c(n(c2c(n(C)cn2)c1=O)C)=O)C
n1(c(n(c2c(n(cn2)C)c1=O)C)=O)C
n1(c(n(c2c(c1=O)n(C)cn2)C)=O)C
n1(c(n(c2c(c1=O)n(cn2)C)C)=O)C
n1(c(n(c2ncn(C)c2c1=O)C)=O)C
n1(c(n(c2ncn(c2c1=O)C)C)=O)C
n1(c(n(c(ncn2C)c2c1=O)C)=O)C
n1(c(n(c(c2c1=O)ncn2C)C)=O)C
n1(c(n(c(c(n2C)c1=O)nc2)C)=O)C
n1(c(n(c(c(c1=O)n2C)nc2)C)=O)C
n1(c(n(C)c2c(n(C)cn2)c1=O)=O)C
n1(c(n(C)c2c(n(cn2)C)c1=O)=O)C
n1(c(n(C)c2c(c1=O)n(C)cn2)=O)C
n1(c(n(C)c2c(c1=O)n(cn2)C)=O)C
n1(c(n(C)c2ncn(C)c2c1=O)=O)C
n1(c(n(C)c2ncn(c2c1=O)C)=O)C
n1(c(n(C)c(ncn2C)c2c1=O)=O)C
n1(c(n(C)c(c2c1=O)ncn2C)=O)C
n1(c(n(C)c(c(n2C)c1=O)nc2)=O)C
n1(c(n(C)c(c(c1=O)n2C)nc2)=O)C
n1(C)c(=O)n(c2c(n(C)cn2)c1=O)C
n1(C)c(=O)n(c2c(n(cn2)C)c1=O)C
n1(C)c(=O)n(c2c(c1=O)n(C)cn2)C
n1(C)c(=O)n(c2c(c1=O)n(cn2)C)C
n1(C)c(=O)n(c2ncn(C)c2c1=O)C
n1(C)c(=O)n(c2ncn(c2c1=O)C)C
n1(C)c(=O)n(c(ncn2C)c2c1=O)C
n1(C)c(=O)n(c(c2c1=O)ncn2C)C
n1(C)c(=O)n(c(c(n2C)c1=O)nc2)C
n1(C)c(=O)n(c(c(c1=O)n2C)nc2)C
n1(C)c(=O)n(C)c2c(n(C)cn2)c1=O
n1(C)c(=O)n(C)c2c(n(cn2)C)c1=O
n1(C)c(=O)n(C)c2c(c1=O)n(C)cn2
n1(C)c(=O)n(C)c2c(c1=O)n(cn2)C
n1(C)c(=O)n(C)c2ncn(C)c2c1=O
n1(C)c(=O)n(C)c2ncn(c2c1=O)C
n1(C)c(=O)n(C)c(ncn2C)c2c1=O
n1(C)c(=O)n(C)c(c2c1=O)ncn2C
n1(C)c(=O)n(C)c(c(n2C)c1=O)nc2
n1(C)c(=O)n(C)c(c(c1=O)n2C)nc2
n1(C)c(n(c2c(n(C)cn2)c1=O)C)=O
n1(C)c(n(c2c(n(cn2)C)c1=O)C)=O
n1(C)c(n(c2c(c1=O)n(C)cn2)C)=O
n1(C)c(n(c2c(c1=O)n(cn2)C)C)=O
n1(C)c(n(c2ncn(C)c2c1=O)C)=O
n1(C)c(n(c2ncn(c2c1=O)C)C)=O
n1(C)c(n(c(ncn2C)c2c1=O)C)=O
n1(C)c(n(c(c2c1=O)ncn2C)C)=O
n1(C)c(n(c(c(n2C)c1=O)nc2)C)=O
n1(C)c(n(c(c(c1=O)n2C)nc2)C)=O
n1(C)c(n(C)c2c(n(C)cn2)c1=O)=O
n1(C)c(n(C)c2c(n(cn2)C)c1=O)=O
n1(C)c(n(C)c2c(c1=O)n(C)cn2)=O
n1(C)c(n(C)c2c(c1=O)n(cn2)C)=O
n1(C)c(n(C)c2ncn(C)c2c1=O)=O
n1(C)c(n(C)c2ncn(c2c1=O)C)=O
n1(C)c(n(C)c(ncn2C)c2c1=O)=O
n1(C)c(n(C)c(c2c1=O)ncn2C)=O
n1(C)c(n(C)c(c(n2C)c1=O)nc2)=O
n1(C)c(n(C)c(c(c1=O)n2C)nc2)=O
n1(c(c2c(ncn2C)n(c1=O)C)=O)C
n1(c(c2c(ncn2C)n(C)c1=O)=O)C
n1(c(c2c(n(c1=O)C)ncn2C)=O)C
n1(c(c2c(n(C)c1=O)ncn2C)=O)C
n1(c(c2n(C)cnc2n(c1=O)C)=O)C
n1(c(c2n(C)cnc2n(C)c1=O)=O)C
n1(c(c2n(cnc2n(c1=O)C)C)=O)C
n1(c(c2n(cnc2n(C)c1=O)C)=O)C
n1(c(c(n2C)c(nc2)n(c1=O)C)=O)C
n1(c(c(n2C)c(nc2)n(C)c1=O)=O)C
n1(c(c(n2C)c(n(c1=O)C)nc2)=O)C
n1(c(c(n2C)c(n(C)c1=O)nc2)=O)C
n1(c(c(c2n(c1=O)C)n(C)cn2)=O)C
n1(c(c(c2n(c1=O)C)n(cn2)C)=O)C
n1(c(c(c2n(C)c1=O)n(C)cn2)=O)C
n1(c(c(c2n(C)c1=O)n(cn2)C)=O)C
n1(c(=O)c2c(ncn2C)n(c1=O)C)C
n1(c(=O)c2c(ncn2C)n(C)c1=O)C
n1(c(=O)c2c(n(c1=O)C)ncn2C)C
n1(c(=O)c2c(n(C)c1=O)ncn2C)C
n1(c(=O)c2n(C)cnc2n(c1=O)C)C
n1(c(=O)c2n(C)cnc2n(C)c1=O)C
n1(c(=O)c2n(cnc2n(c1=O)C)C)C
n1(c(=O)c2n(cnc2n(C)c1=O)C)C
n1(c(=O)c(n2C)c(nc2)n(c1=O)C)C
n1(c(=O)c(n2C)c(nc2)n(C)c1=O)C
n1(c(=O)c(n2C)c(n(c1=O)C)nc2)C
n1(c(=O)c(n2C)c(n(C)c1=O)nc2)C
n1(c(=O)c(c2n(c1=O)C)n(C)cn2)C
n1(c(=O)c(c2n(c1=O)C)n(cn2)C)C
n1(c(=O)c(c2n(C)c1=O)n(C)cn2)C
n1(c(=O)c(c2n(C)c1=O)n(cn2)C)C
n1(C)c(c2c(ncn2C)n(c1=O)C)=O
n1(C)c(c2c(ncn2C)n(C)c1=O)=O
n1(C)c(c2c(n(c1=O)C)ncn2C)=O
n1(C)c(c2c(n(C)c1=O)ncn2C)=O
n1(C)c(c2n(C)cnc2n(c1=O)C)=O
n1(C)c(c2n(C)cnc2n(C)c1=O)=O
n1(C)c(c2n(cnc2n(c1=O)C)C)=O
n1(C)c(c2n(cnc2n(C)c1=O)C)=O
n1(C)c(c(n2C)c(nc2)n(c1=O)C)=O
n1(C)c(c(n2C)c(nc2)n(C)c1=O)=O
n1(C)c(c(n2C)c(n(c1=O)C)nc2)=O
n1(C)c(c(n2C)c(n(C)c1=O)nc2)=O
n1(C)c(c(c2n(c1=O)C)n(C)cn2)=O
n1(C)c(c(c2n(c1=O)C)n(cn2)C)=O
n1(C)c(c(c2n(C)c1=O)n(C)cn2)=O
n1(C)c(c(c2n(C)c1=O)n(cn2)C)=O
n1(C)c(=O)c2c(ncn2C)n(c1=O)C
n1(C)c(=O)c2c(ncn2C)n(C)c1=O
n1(C)c(=O)c2c(n(c1=O)C)ncn2C
n1(C)c(=O)c2c(n(C)c1=O)ncn2C
n1(C)c(=O)c2n(C)cnc2n(c1=O)C
n1(C)c(=O)c2n(C)cnc2n(C)c1=O
n1(C)c(=O)c2n(cnc2n(c1=O)C)C
n1(C)c(=O)c2n(cnc2n(C)c1=O)C
n1(C)c(=O)c(n2C)c(nc2)n(c1=O)C
n1(C)c(=O)c(n2C)c(nc2)n(C)c1=O
n1(C)c(=O)c(n2C)c(n(c1=O)C)nc2
n1(C)c(=O)c(n2C)c(n(C)c1=O)nc2
n1(C)c(=O)c(c2n(c1=O)C)n(C)cn2
n1(C)c(=O)c(c2n(c1=O)C)n(cn2)C
n1(C)c(=O)c(c2n(C)c1=O)n(C)cn2
n1(C)c(=O)c(c2n(C)c1=O)n(cn2)C
c1(=O)n(c2c(n(C)cn2)c(=O)n1C)C
c1(=O)n(c2c(n(C)cn2)c(n1C)=O)C
c1(=O)n(c2c(n(cn2)C)c(=O)n1C)C
c1(=O)n(c2c(n(cn2)C)c(n1C)=O)C
c1(=O)n(c2c(c(=O)n1C)n(C)cn2)C
c1(=O)n(c2c(c(=O)n1C)n(cn2)C)C
c1(=O)n(c2c(c(n1C)=O)n(C)cn2)C
c1(=O)n(c2c(c(n1C)=O)n(cn2)C)C
c1(=O)n(c2ncn(C)c2c(=O)n1C)C
c1(=O)n(c2ncn(C)c2c(n1C)=O)C
c1(=O)n(c2ncn(c2c(=O)n1C)C)C
c1(=O)n(c2ncn(c2c(n1C)=O)C)C
c1(=O)n(c(ncn2C)c2c(=O)n1C)C
c1(=O)n(c(ncn2C)c2c(n1C)=O)C
c1(=O)n(c(c2c(=O)n1C)ncn2C)C
c1(=O)n(c(c2c(n1C)=O)ncn2C)C
c1(=O)n(c(c(n2C)c(=O)n1C)nc2)C
c1(=O)n(c(c(n2C)c(n1C)=O)nc2)C
c1(=O)n(c(c(c(=O)n1C)n2C)nc2)C
c1(=O)n(c(c(c(n1C)=O)n2C)nc2)C
c1(=O)n(C)c2c(n(C)cn2)c(=O)n1C
c1(=O)n(C)c2c(n(C)cn2)c(n1C)=O
c1(=O)n(C)c2c(n(cn2)C)c(=O)n1C
c1(=O)n(C)c2c(n(cn2)C)c(n1C)=O
c1(=O)n(C)c2c(c(=O)n1C)n(C)cn2
c1(=O)n(C)c2c(c(=O)n1C)n(cn2)C
c1(=O)n(C)c2c(c(n1C)=O)n(C)cn2
c1(=O)n(C)c2c(c(n1C)=O)n(cn2)C
c1(=O)n(C)c2ncn(C)c2c(=O)n1C
c1(=O)n(C)c2ncn(C)c2c(n1C)=O
c1(=O)n(C)c2ncn(c2c(=O)n1C)C
c1(=O)n(C)c2ncn(c2c(n1C)=O)C
c1(=O)n(C)c(ncn2C)c2c(=O)n1C
c1(=O)n(C)c(ncn2C)c2c(n1C)=O
c1(=O)n(C)c(c2c(=O)n1C)ncn2C
c1(=O)n(C)c(c2c(n1C)=O)ncn2C
c1(=O)n(C)c(c(n2C)c(=O)n1C)nc2
c1(=O)n(C)c(c(n2C)c(n1C)=O)nc2
c1(=O)n(C)c(c(c(=O)n1C)n2C)nc2
c1(=O)n(C)c(c(c(n1C)=O)n2C)nc2
c1(n(c2c(n(C)cn2)c(=O)n1C)C)=O
c1(n(c2c(n(C)cn2)c(n1C)=O)C)=O
c1(n(c2c(n(cn2)C)c(=O)n1C)C)=O
c1(n(c2c(n(cn2)C)c(n1C)=O)C)=O
c1(n(c2c(c(=O)n1C)n(C)cn2)C)=O
c1(n(c2c(c(=O)n1C)n(cn2)C)C)=O
c1(n(c2c(c(n1C)=O)n(C)cn2)C)=O
c1(n(c2c(c(n1C)=O)n(cn2)C)C)=O
c1(n(c2ncn(C)c2c(=O)n1C)C)=O
c1(n(c2ncn(C)c2c(n1C)=O)C)=O
c1(n(c2ncn(c2c(=O)n1C)C)C)=O
c1(n(c2ncn(c2c(n1C)=O)C)C)=O
c1(n(c(ncn2C)c2c(=O)n1C)C)=O
c1(n(c(ncn2C)c2c(n1C)=O)C)=O
c1(n(c(c2c(=O)n1C)ncn2C)C)=O
c1(n(c(c2c(n1C)=O)ncn2C)C)=O
c1(n(c(c(n2C)c(=O)n1C)nc2)C)=O
c1(n(c(c(n2C)c(n1C)=O)nc2)C)=O
c1(n(c(c(c(=O)n1C)n2C)nc2)C)=O
c1(n(c(c(c(n1C)=O)n2C)nc2)C)=O
c1(n(C)c2c(n(C)cn2)c(=O)n1C)=O
c1(n(C)c2c(n(C)cn2)c(n1C)=O)=O
c1(n(C)c2c(n(cn2)C)c(=O)n1C)=O
c1(n(C)c2c(n(cn2)C)c(n1C)=O)=O
c1(n(C)c2c(c(=O)n1C)n(C)cn2)=O
c1(n(C)c2c(c(=O)n1C)n(cn2)C)=O
c1(n(C)c2c(c(n1C)=O)n(C)cn2)=O
c1(n(C)c2c(c(n1C)=O)n(cn2)C)=O
c1(n(C)c2ncn(C)c2c(=O)n1C)=O
c1(n(C)c2ncn(C)c2c(n1C)=O)=O
c1(n(C)c2ncn(c2c(=O)n1C)C)=O
c1(n(C)c2ncn(c2c(n1C)=O)C)=O
c1(n(C)c(ncn2C)c2c(=O)n1C)=O
c1(n(C)c(ncn2C)c2c(n1C)=O)=O
c1(n(C)c(c2c(=O)n1C)ncn2C)=O
c1(n(C)c(c2c(n1C)=O)ncn2C)=O
c1(n(C)c(c(n2C)c(=O)n1C)nc2)=O
c1(n(C)c(c(n2C)c(n1C)=O)nc2)=O
c1(n(C)c(c(c(=O)n1C)n2C)nc2)=O
c1(n(C)c(c(c(n1C)=O)n2C)nc2)=O
c1(n(c(c2c(ncn2C)n1C)=O)C)=O
c1(n(c(c2c(n1C)ncn2C)=O)C)=O
c1(n(c(c2n(C)cnc2n1C)=O)C)=O
c1(n(c(c2n(cnc2n1C)C)=O)C)=O
c1(n(c(c(n2C)c(nc2)n1C)=O)C)=O
c1(n(c(c(n2C)c(n1C)nc2)=O)C)=O
c1(n(c(c(c2n1C)n(C)cn2)=O)C)=O
c1(n(c(c(c2n1C)n(cn2)C)=O)C)=O
c1(n(c(=O)c2c(ncn2C)n1C)C)=O
c1(n(c(=O)c2c(n1C)ncn2C)C)=O
c1(n(c(=O)c2n(C)cnc2n1C)C)=O
c1(n(c(=O)c2n(cnc2n1C)C)C)=O
c1(n(c(=O)c(n2C)c(nc2)n1C)C)=O
c1(n(c(=O)c(n2C)c(n1C)nc2)C)=O
c1(n(c(=O)c(c2n1C)n(C)cn2)C)=O
c1(n(c(=O)c(c2n1C)n(cn2)C)C)=O
c1(n(C)c(c2c(ncn2C)n1C)=O)=O
c1(n(C)c(c2c(n1C)ncn2C)=O)=O
c1(n(C)c(c2n(C)cnc2n1C)=O)=O
c1(n(C)c(c2n(cnc2n1C)C)=O)=O
c1(n(C)c(c(n2C)c(nc2)n1C)=O)=O
c1(n(C)c(c(n2C)c(n1C)nc2)=O)=O
c1(n(C)c(c(c2n1C)n(C)cn2)=O)=O
c1(n(C)c(c(c2n1C)n(cn2)C)=O)=O
c1(n(C)c(=O)c2c(ncn2C)n1C)=O
c1(n(C)c(=O)c2c(n1C)ncn2C)=O
c1(n(C)c(=O)c2n(C)cnc2n1C)=O
c1(n(C)c(=O)c2n(cnc2n1C)C)=O
c1(n(C)c(=O)c(n2C)c(nc2)n1C)=O
c1(n(C)c(=O)c(n2C)c(n1C)nc2)=O
c1(n(C)c(=O)c(c2n1C)n(C)cn2)=O
c1(n(C)c(=O)c(c2n1C)n(cn2)C)=O
c1(=O)n(c(c2c(ncn2C)n1C)=O)C
c1(=O)n(c(c2c(n1C)ncn2C)=O)C
c1(=O)n(c(c2n(C)cnc2n1C)=O)C
c1(=O)n(c(c2n(cnc2n1C)C)=O)C
c1(=O)n(c(c(n2C)c(nc2)n1C)=O)C
c1(=O)n(c(c(n2C)c(n1C)nc2)=O)C
c1(=O)n(c(c(c2n1C)n(C)cn2)=O)C
c1(=O)n(c(c(c2n1C)n(cn2)C)=O)C
c1(=O)n(c(=O)c2c(ncn2C)n1C)C
c1(=O)n(c(=O)c2c(n1C)ncn2C)C
c1(=O)n(c(=O)c2n(C)cnc2n1C)C
c1(=O)n(c(=O)c2n(cnc2n1C)C)C
c1(=O)n(c(=O)c(n2C)c(nc2)n1C)C
c1(=O)n(c(=O)c(n2C)c(n1C)nc2)C
c1(=O)n(c(=O)c(c2n1C)n(C)cn2)C
c1(=O)n(c(=O)c(c2n1C)n(cn2)C)C
c1(=O)n(C)c(c2c(ncn2C)n1C)=O
c1(=O)n(C)c(c2c(n1C)ncn2C)=O
c1(=O)n(C)c(c2n(C)cnc2n1C)=O
c1(=O)n(C)c(c2n(cnc2n1C)C)=O
c1(=O)n(C)c(c(n2C)c(nc2)n1C)=O
c1(=O)n(C)c(c(n2C)c(n1C)nc2)=O
c1(=O)n(C)c(c(c2n1C)n(C)cn2)=O
c1(=O)n(C)c(c(c2n1C)n(cn2)C)=O
c1(=O)n(C)c(=O)c2c(ncn2C)n1C
c1(=O)n(C)c(=O)c2c(n1C)ncn2C
c1(=O)n(C)c(=O)c2n(C)cnc2n1C
c1(=O)n(C)c(=O)c2n(cnc2n1C)C
c1(=O)n(C)c(=O)c(n2C)c(nc2)n1C
c1(=O)n(C)c(=O)c(n2C)c(n1C)nc2
c1(=O)n(C)c(=O)c(c2n1C)n(C)cn2
c1(=O)n(C)c(=O)c(c2n1C)n(cn2)C
O=c1n(c2c(n(C)cn2)c(=O)n1C)C
O=c1n(c2c(n(C)cn2)c(n1C)=O)C
O=c1n(c2c(n(cn2)C)c(=O)n1C)C
O=c1n(c2c(n(cn2)C)c(n1C)=O)C
O=c1n(c2c(c(=O)n1C)n(C)cn2)C
O=c1n(c2c(c(=O)n1C)n(cn2)C)C
O=c1n(c2c(c(n1C)=O)n(C)cn2)C
O=c1n(c2c(c(n1C)=O)n(cn2)C)C
O=c1n(c2ncn(C)c2c(=O)n1C)C
O=c1n(c2ncn(C)c2c(n1C)=O)C
O=c1n(c2ncn(c2c(=O)n1C)C)C
O=c1n(c2ncn(c2c(n1C)=O)C)C
O=c1n(c(ncn2C)c2c(=O)n1C)C
O=c1n(c(ncn2C)c2c(n1C)=O)C
O=c1n(c(c2c(=O)n1C)ncn2C)C
O=c1n(c(c2c(n1C)=O)ncn2C)C
O=c1n(c(c(n2C)c(=O)n1C)nc2)C
O=c1n(c(c(n2C)c(n1C)=O)nc2)C
O=c1n(c(c(c(=O)n1C)n2C)nc2)C
O=c1n(c(c(c(n1C)=O)n2C)nc2)C
O=c1n(C)c2c(n(C)cn2)c(=O)n1C
O=c1n(C)c2c(n(C)cn2)c(n1C)=O
O=c1n(C)c2c(n(cn2)C)c(=O)n1C
O=c1n(C)c2c(n(cn2)C)c(n1C)=O
O=c1n(C)c2c(c(=O)n1C)n(C)cn2
O=c1n(C)c2c(c(=O)n1C)n(cn2)C
O=c1n(C)c2c(c(n1C)=O)n(C)cn2
O=c1n(C)c2c(c(n1C)=O)n(cn2)C
O=c1n(C)c2ncn(C)c2c(=O)n1C
O=c1n(C)c2ncn(C)c2c(n1C)=O
O=c1n(C)c2ncn(c2c(=O)n1C)C
O=c1n(C)c2ncn(c2c(n1C)=O)C
O=c1n(C)c(ncn2C)c2c(=O)n1C
O=c1n(C)c(ncn2C)c2c(n1C)=O
O=c1n(C)c(c2c(=O)n1C)ncn2C
O=c1n(C)c(c2c(n1C)=O)ncn2C
O=c1n(C)c(c(n2C)c(=O)n1C)nc2
O=c1n(C)c(c(n2C)c(n1C)=O)nc2
O=c1n(C)c(c(c(=O)n1C)n2C)nc2
O=c1n(C)c(c(c(n1C)=O)n2C)nc2
O=c1n(c(c2c(ncn2C)n1C)=O)C
O=c1n(c(c2c(n1C)ncn2C)=O)C
O=c1n(c(c2n(C)cnc2n1C)=O)C
O=c1n(c(c2n(cnc2n1C)C)=O)C
O=c1n(c(c(n2C)c(nc2)n1C)=O)C
O=c1n(c(c(n2C)c(n1C)nc2)=O)C
O=c1n(c(c(c2n1C)n(C)cn2)=O)C
O=c1n(c(c(c2n1C)n(cn2)C)=O)C
O=c1n(c(=O)c2c(ncn2C)n1C)C
O=c1n(c(=O)c2c(n1C)ncn2C)C
O=c1n(c(=O)c2n(C)cnc2n1C)C
O=c1n(c(=O)c2n(cnc2n1C)C)C
O=c1n(c(=O)c(n2C)c(nc2)n1C)C
O=c1n(c(=O)c(n2C)c(n1C)nc2)C
O=c1n(c(=O)c(c2n1C)n(C)cn2)C
O=c1n(c(=O)c(c2n1C)n(cn2)C)C
O=c1n(C)c(c2c(ncn2C)n1C)=O
O=c1n(C)c(c2c(n1C)ncn2C)=O
O=c1n(C)c(c2n(C)cnc2n1C)=O
O=c1n(C)c(c2n(cnc2n1C)C)=O
O=c1n(C)c(c(n2C)c(nc2)n1C)=O
O=c1n(C)c(c(n2C)c(n1C)nc2)=O
O=c1n(C)c(c(c2n1C)n(C)cn2)=O
O=c1n(C)c(c(c2n1C)n(cn2)C)=O
O=c1n(C)c(=O)c2c(ncn2C)n1C
O=c1n(C)c(=O)c2c(n1C)ncn2C
O=c1n(C)c(=O)c2n(C)cnc2n1C
O=c1n(C)c(=O)c2n(cnc2n1C)C
O=c1n(C)c(=O)c(n2C)c(nc2)n1C
O=c1n(C)c(=O)c(n2C)c(n1C)nc2
O=c1n(C)c(=O)c(c2n1C)n(C)cn2
O=c1n(C)c(=O)c(c2n1C)n(cn2)C
O=c(n1C)n(c2c(n(C)cn2)c1=O)C
O=c(n1C)n(c2c(n(cn2)C)c1=O)C
O=c(n1C)n(c2c(c1=O)n(C)cn2)C
O=c(n1C)n(c2c(c1=O)n(cn2)C)C
O=c(n1C)n(c2ncn(C)c2c1=O)C
O=c(n1C)n(c2ncn(c2c1=O)C)C
O=c(n1C)n(c(ncn2C)c2c1=O)C
O=c(n1C)n(c(c2c1=O)ncn2C)C
O=c(n1C)n(c(c(n2C)c1=O)nc2)C
O=c(n1C)n(c(c(c1=O)n2C)nc2)C
O=c(n1C)n(C)c2c(n(C)cn2)c1=O
O=c(n1C)n(C)c2c(n(cn2)C)c1=O
O=c(n1C)n(C)c2c(c1=O)n(C)cn2
O=c(n1C)n(C)c2c(c1=O)n(cn2)C
O=c(n1C)n(C)c2ncn(C)c2c1=O
O=c(n1C)n(C)c2ncn(c2c1=O)C
O=c(n1C)n(C)c(ncn2C)c2c1=O
O=c(n1C)n(C)c(c2c1=O)ncn2C
O=c(n1C)n(C)c(c(n2C)c1=O)nc2
O=c(n1C)n(C)c(c(c1=O)n2C)nc2
O=c(n(c1=O)C)n(c2c1n(C)cn2)C
O=c(n(c1=O)C)n(c2c1n(cn2)C)C
O=c(n(c1=O)C)n(c2ncn(C)c21)C
O=c(n(c1=O)C)n(c2ncn(C)c12)C
O=c(n(c1=O)C)n(c2ncn(c21)C)C
O=c(n(c1=O)C)n(c2ncn(c12)C)C
O=c(n(c1=O)C)n(c(ncn2C)c21)C
O=c(n(c1=O)C)n(c(ncn2C)c12)C
O=c(n(c1=O)C)n(c(c1n2C)nc2)C
O=c(n(c1=O)C)n(C)c2c1n(C)cn2
O=c(n(c1=O)C)n(C)c2c1n(cn2)C
O=c(n(c1=O)C)n(C)c2ncn(C)c21
O=c(n(c1=O)C)n(C)c2ncn(C)c12
O=c(n(c1=O)C)n(C)c2ncn(c21)C
O=c(n(c1=O)C)n(C)c2ncn(c12)C
O=c(n(c1=O)C)n(C)c(ncn2C)c21
O=c(n(c1=O)C)n(C)c(ncn2C)c12
O=c(n(c1=O)C)n(C)c(c1n2C)nc2
O=c(n(c(c1c2ncn1C)=O)C)n2C
O=c(n(c(c1n2C)=O)C)n(c1nc2)C
O=c(n(c(c1n2C)=O)C)n(C)c1nc2
O=c(n(c(c(n1C)c2nc1)=O)C)n2C
O=c(n(c(=O)c1c2ncn1C)C)n2C
O=c(n(c(=O)c1n2C)C)n(c1nc2)C
O=c(n(c(=O)c1n2C)C)n(C)c1nc2
O=c(n(c(=O)c(n1C)c2nc1)C)n2C
O=c(n(C)c1=O)n(c2c1n(C)cn2)C
O=c(n(C)c1=O)n(c2c1n(cn2)C)C
O=c(n(C)c1=O)n(c2ncn(C)c21)C
O=c(n(C)c1=O)n(c2ncn(C)c12)C
O=c(n(C)c1=O)n(c2ncn(c21)C)C
O=c(n(C)c1=O)n(c2ncn(c12)C)C
O=c(n(C)c1=O)n(c(ncn2C)c21)C
O=c(n(C)c1=O)n(c(ncn2C)c12)C
O=c(n(C)c1=O)n(c(c1n2C)nc2)C
O=c(n(C)c1=O)n(C)c2c1n(C)cn2
O=c(n(C)c1=O)n(C)c2c1n(cn2)C
O=c(n(C)c1=O)n(C)c2ncn(C)c21
O=c(n(C)c1=O)n(C)c2ncn(C)c12
O=c(n(C)c1=O)n(C)c2ncn(c21)C
O=c(n(C)c1=O)n(C)c2ncn(c12)C
O=c(n(C)c1=O)n(C)c(ncn2C)c21
O=c(n(C)c1=O)n(C)c(ncn2C)c12
O=c(n(C)c1=O)n(C)c(c1n2C)nc2
O=c(n(C)c(c1c2ncn1C)=O)n2C
O=c(n(C)c(c1n2C)=O)n(c1nc2)C
O=c(n(C)c(c1n2C)=O)n(C)c1nc2
O=c(n(C)c(c(n1C)c2nc1)=O)n2C
O=c(n(C)c(=O)c1c2ncn1C)n2C
O=c(n(C)c(=O)c1n2C)n(c1nc2)C
O=c(n(C)c(=O)c1n2C)n(C)c1nc2
O=c(n(C)c(=O)c(n1C)c2nc1)n2C
O=c(n1C)n(c(c2c1ncn2C)=O)C
O=c(n1C)n(c(c2n(C)cnc12)=O)C
O=c(n1C)n(c(c2n(C)cnc21)=O)C
O=c(n1C)n(c(c2n(cnc12)C)=O)C
O=c(n1C)n(c(c2n(cnc21)C)=O)C
O=c(n1C)n(c(c(n2C)c1nc2)=O)C
O=c(n1C)n(c(=O)c2c1ncn2C)C
O=c(n1C)n(c(=O)c2n(C)cnc12)C
O=c(n1C)n(c(=O)c2n(C)cnc21)C
O=c(n1C)n(c(=O)c2n(cnc12)C)C
O=c(n1C)n(c(=O)c2n(cnc21)C)C
O=c(n1C)n(c(=O)c(n2C)c1nc2)C
O=c(n1C)n(C)c(c2c1ncn2C)=O
O=c(n1C)n(C)c(c2n(C)cnc12)=O
O=c(n1C)n(C)c(c2n(C)cnc21)=O
O=c(n1C)n(C)c(c2n(cnc12)C)=O
O=c(n1C)n(C)c(c2n(cnc21)C)=O
O=c(n1C)n(C)c(c(n2C)c1nc2)=O
O=c(n1C)n(C)c(=O)c2c1ncn2C
O=c(n1C)n(C)c(=O)c2n(C)cnc12
O=c(n1C)n(C)c(=O)c2n(C)cnc21
O=c(n1C)n(C)c(=O)c2n(cnc12)C
O=c(n1C)n(C)c(=O)c2n(cnc21)C
O=c(n1C)n(C)c(=O)c(n2C)c1nc2
O=c(n(c1c2n(C)cn1)C)n(c2=O)C
O=c(n(c1c2n(C)cn1)C)n(C)c2=O
O=c(n(c1c2n(cn1)C)C)n(c2=O)C
O=c(n(c1c2n(cn1)C)C)n(C)c2=O
O=c(n(c1c(n(C)cn1)c2=O)C)n2C
O=c(n(c1c(n(cn1)C)c2=O)C)n2C
O=c(n(c1c(c2=O)n(C)cn1)C)n2C
O=c(n(c1c(c2=O)n(cn1)C)C)n2C
O=c(n(c1ncn2C)C)n(c(c21)=O)C
O=c(n(c1ncn2C)C)n(c(c12)=O)C
O=c(n(c1ncn2C)C)n(c(=O)c21)C
O=c(n(c1ncn2C)C)n(c(=O)c12)C
O=c(n(c1ncn2C)C)n(C)c(c21)=O
O=c(n(c1ncn2C)C)n(C)c(c12)=O
O=c(n(c1ncn2C)C)n(C)c(=O)c21
O=c(n(c1ncn2C)C)n(C)c(=O)c12
O=c(n(c1ncn(C)c1c2=O)C)n2C
O=c(n(c1ncn(c1c2=O)C)C)n2C
O=c(n(c(ncn1C)c1c2=O)C)n2C
O=c(n(c(c1c2=O)ncn1C)C)n2C
O=c(n(c(c1n2C)nc2)C)n(c1=O)C
O=c(n(c(c1n2C)nc2)C)n(C)c1=O
O=c(n(c(c(n1C)c2=O)nc1)C)n2C
O=c(n(c(c(c1=O)n2C)nc2)C)n1C
O=c(n(C)c1c2n(C)cn1)n(c2=O)C
O=c(n(C)c1c2n(C)cn1)n(C)c2=O
O=c(n(C)c1c2n(cn1)C)n(c2=O)C
O=c(n(C)c1c2n(cn1)C)n(C)c2=O
O=c(n(C)c1c(n(C)cn1)c2=O)n2C
O=c(n(C)c1c(n(cn1)C)c2=O)n2C
O=c(n(C)c1c(c2=O)n(C)cn1)n2C
O=c(n(C)c1c(c2=O)n(cn1)C)n2C
O=c(n(C)c1ncn2C)n(c(c21)=O)C
O=c(n(C)c1ncn2C)n(c(c12)=O)C
O=c(n(C)c1ncn2C)n(c(=O)c21)C
O=c(n(C)c1ncn2C)n(c(=O)c12)C
O=c(n(C)c1ncn2C)n(C)c(c21)=O
O=c(n(C)c1ncn2C)n(C)c(c12)=O
O=c(n(C)c1ncn2C)n(C)c(=O)c21
O=c(n(C)c1ncn2C)n(C)c(=O)c12
O=c(n(C)c1ncn(C)c1c2=O)n2C
O=c(n(C)c1ncn(c1c2=O)C)n2C
O=c(n(C)c(ncn1C)c1c2=O)n2C
O=c(n(C)c(c1c2=O)ncn1C)n2C
O=c(n(C)c(c1n2C)nc2)n(c1=O)C
O=c(n(C)c(c1n2C)nc2)n(C)c1=O
O=c(n(C)c(c(n1C)c2=O)nc1)n2C
O=c(n(C)c(c(c1=O)n2C)nc2)n1C
n1(c(n(c(c2c1ncn2C)=O)C)=O)C
n1(c(n(c(c2n(C)cnc12)=O)C)=O)C
n1(c(n(c(c2n(C)cnc21)=O)C)=O)C
n1(c(n(c(c2n(cnc12)C)=O)C)=O)C
n1(c(n(c(c2n(cnc21)C)=O)C)=O)C
n1(c(n(c(c(n2C)c1nc2)=O)C)=O)C
n1(c(n(c(=O)c2c1ncn2C)C)=O)C
n1(c(n(c(=O)c2n(C)cnc12)C)=O)C
n1(c(n(c(=O)c2n(C)cnc21)C)=O)C
n1(c(n(c(=O)c2n(cnc12)C)C)=O)C
n1(c(n(c(=O)c2n(cnc21)C)C)=O)C
n1(c(n(c(=O)c(n2C)c1nc2)C)=O)C
n1(c(n(C)c(c2c1ncn2C)=O)=O)C
n1(c(n(C)c(c2n(C)cnc12)=O)=O)C
n1(c(n(C)c(c2n(C)cnc21)=O)=O)C
n1(c(n(C)c(c2n(cnc12)C)=O)=O)C
n1(c(n(C)c(c2n(cnc21)C)=O)=O)C
n1(c(n(C)c(c(n2C)c1nc2)=O)=O)C
n1(c(n(C)c(=O)c2c1ncn2C)=O)C
n1(c(n(C)c(=O)c2n(C)cnc12)=O)C
n1(c(n(C)c(=O)c2n(C)cnc21)=O)C
n1(c(n(C)c(=O)c2n(cnc12)C)=O)C
n1(c(n(C)c(=O)c2n(cnc21)C)=O)C
n1(c(n(C)c(=O)c(n2C)c1nc2)=O)C
n1(c(=O)n(c(c2c1ncn2C)=O)C)C
n1(c(=O)n(c(c2n(C)cnc12)=O)C)C
n1(c(=O)n(c(c2n(C)cnc21)=O)C)C
n1(c(=O)n(c(c2n(cnc12)C)=O)C)C
n1(c(=O)n(c(c2n(cnc21)C)=O)C)C
n1(c(=O)n(c(c(n2C)c1nc2)=O)C)C
n1(c(=O)n(c(=O)c2c1ncn2C)C)C
n1(c(=O)n(c(=O)c2n(C)cnc12)C)C
n1(c(=O)n(c(=O)c2n(C)cnc21)C)C
n1(c(=O)n(c(=O)c2n(cnc12)C)C)C
n1(c(=O)n(c(=O)c2n(cnc21)C)C)C
n1(c(=O)n(c(=O)c(n2C)c1nc2)C)C
n1(c(=O)n(C)c(c2c1ncn2C)=O)C
n1(c(=O)n(C)c(c2n(C)cnc12)=O)C
n1(c(=O)n(C)c(c2n(C)cnc21)=O)C
n1(c(=O)n(C)c(c2n(cnc12)C)=O)C
n1(c(=O)n(C)c(c2n(cnc21)C)=O)C
n1(c(=O)n(C)c(c(n2C)c1nc2)=O)C
n1(c(=O)n(C)c(=O)c2c1ncn2C)C
n1(c(=O)n(C)c(=O)c2n(C)cnc12)C
n1(c(=O)n(C)c(=O)c2n(C)cnc21)C
n1(c(=O)n(C)c(=O)c2n(cnc12)C)C
n1(c(=O)n(C)c(=O)c2n(cnc21)C)C
n1(c(=O)n(C)c(=O)c(n2C)c1nc2)C
n1(C)c(n(c(c2c1ncn2C)=O)C)=O
n1(C)c(n(c(c2n(C)cnc12)=O)C)=O
n1(C)c(n(c(c2n(C)cnc21)=O)C)=O
n1(C)c(n(c(c2n(cnc12)C)=O)C)=O
n1(C)c(n(c(c2n(cnc21)C)=O)C)=O
n1(C)c(n(c(c(n2C)c1nc2)=O)C)=O
n1(C)c(n(c(=O)c2c1ncn2C)C)=O
n1(C)c(n(c(=O)c2n(C)cnc12)C)=O
n1(C)c(n(c(=O)c2n(C)cnc21)C)=O
n1(C)c(n(c(=O)c2n(cnc12)C)C)=O
n1(C)c(n(c(=O)c2n(cnc21)C)C)=O
n1(C)c(n(c(=O)c(n2C)c1nc2)C)=O
n1(C)c(n(C)c(c2c1ncn2C)=O)=O
n1(C)c(n(C)c(c2n(C)cnc12)=O)=O
n1(C)c(n(C)c(c2n(C)cnc21)=O)=O
n1(C)c(n(C)c(c2n(cnc12)C)=O)=O
n1(C)c(n(C)c(c2n(cnc21)C)=O)=O
n1(C)c(n(C)c(c(n2C)c1nc2)=O)=O
n1(C)c(n(C)c(=O)c2c1ncn2C)=O
n1(C)c(n(C)c(=O)c2n(C)cnc12)=O
n1(C)c(n(C)c(=O)c2n(C)cnc21)=O
n1(C)c(n(C)c(=O)c2n(cnc12)C)=O
n1(C)c(n(C)c(=O)c2n(cnc21)C)=O
n1(C)c(n(C)c(=O)c(n2C)c1nc2)=O
n1(C)c(=O)n(c(c2c1ncn2C)=O)C
n1(C)c(=O)n(c(c2n(C)cnc12)=O)C
n1(C)c(=O)n(c(c2n(C)cnc21)=O)C
n1(C)c(=O)n(c(c2n(cnc12)C)=O)C
n1(C)c(=O)n(c(c2n(cnc21)C)=O)C
n1(C)c(=O)n(c(c(n2C)c1nc2)=O)C
n1(C)c(=O)n(c(=O)c2c1ncn2C)C
n1(C)c(=O)n(c(=O)c2n(C)cnc12)C
n1(C)c(=O)n(c(=O)c2n(C)cnc21)C
n1(C)c(=O)n(c(=O)c2n(cnc12)C)C
n1(C)c(=O)n(c(=O)c2n(cnc21)C)C
n1(C)c(=O)n(c(=O)c(n2C)c1nc2)C
n1(C)c(=O)n(C)c(c2c1ncn2C)=O
n1(C)c(=O)n(C)c(c2n(C)cnc12)=O
n1(C)c(=O)n(C)c(c2n(C)cnc21)=O
n1(C)c(=O)n(C)c(c2n(cnc12)C)=O
n1(C)c(=O)n(C)c(c2n(cnc21)C)=O
n1(C)c(=O)n(C)c(c(n2C)c1nc2)=O
n1(C)c(=O)n(C)c(=O)c2c1ncn2C
n1(C)c(=O)n(C)c(=O)c2n(C)cnc12
n1(C)c(=O)n(C)c(=O)c2n(C)cnc21
n1(C)c(=O)n(C)c(=O)c2n(cnc12)C
n1(C)c(=O)n(C)c(=O)c2n(cnc21)C
n1(C)c(=O)n(C)c(=O)c(n2C)c1nc2
n1(c2c(n(C)cn2)c(=O)n(c1=O)C)C
n1(c2c(n(C)cn2)c(=O)n(C)c1=O)C
n1(c2c(n(C)cn2)c(n(c1=O)C)=O)C
n1(c2c(n(C)cn2)c(n(C)c1=O)=O)C
n1(c2c(n(cn2)C)c(=O)n(c1=O)C)C
n1(c2c(n(cn2)C)c(=O)n(C)c1=O)C
n1(c2c(n(cn2)C)c(n(c1=O)C)=O)C
n1(c2c(n(cn2)C)c(n(C)c1=O)=O)C
n1(c2c(c(=O)n(c1=O)C)n(C)cn2)C
n1(c2c(c(=O)n(c1=O)C)n(cn2)C)C
n1(c2c(c(=O)n(C)c1=O)n(C)cn2)C
n1(c2c(c(=O)n(C)c1=O)n(cn2)C)C
n1(c2c(c(n(c1=O)C)=O)n(C)cn2)C
n1(c2c(c(n(c1=O)C)=O)n(cn2)C)C
n1(c2c(c(n(C)c1=O)=O)n(C)cn2)C
n1(c2c(c(n(C)c1=O)=O)n(cn2)C)C
n1(c2ncn(C)c2c(=O)n(c1=O)C)C
n1(c2ncn(C)c2c(=O)n(C)c1=O)C
n1(c2ncn(C)c2c(n(c1=O)C)=O)C
n1(c2ncn(C)c2c(n(C)c1=O)=O)C
n1(c2ncn(c2c(=O)n(c1=O)C)C)C
n1(c2ncn(c2c(=O)n(C)c1=O)C)C
n1(c2ncn(c2c(n(c1=O)C)=O)C)C
n1(c2ncn(c2c(n(C)c1=O)=O)C)C
n1(c(ncn2C)c2c(=O)n(c1=O)C)C
n1(c(ncn2C)c2c(=O)n(C)c1=O)C
n1(c(ncn2C)c2c(n(c1=O)C)=O)C
n1(c(ncn2C)c2c(n(C)c1=O)=O)C
n1(c(c2c(=O)n(c1=O)C)ncn2C)C
n1(c(c2c(=O)n(C)c1=O)ncn2C)C
n1(c(c2c(n(c1=O)C)=O)ncn2C)C
n1(c(c2c(n(C)c1=O)=O)ncn2C)C
n1(c(c(n2C)c(=O)n(c1=O)C)nc2)C
n1(c(c(n2C)c(=O)n(C)c1=O)nc2)C
n1(c(c(n2C)c(n(c1=O)C)=O)nc2)C
n1(c(c(n2C)c(n(C)c1=O)=O)nc2)C
n1(c(c(c(=O)n(c1=O)C)n2C)nc2)C
n1(c(c(c(=O)n(C)c1=O)n2C)nc2)C
n1(c(c(c(n(c1=O)C)=O)n2C)nc2)C
n1(c(c(c(n(C)c1=O)=O)n2C)nc2)C
n1(C)c2c(n(C)cn2)c(=O)n(c1=O)C
n1(C)c2c(n(C)cn2)c(=O)n(C)c1=O
n1(C)c2c(n(C)cn2)c(n(c1=O)C)=O
n1(C)c2c(n(C)cn2)c(n(C)c1=O)=O
n1(C)c2c(n(cn2)C)c(=O)n(c1=O)C
n1(C)c2c(n(cn2)C)c(=O)n(C)c1=O
n1(C)c2c(n(cn2)C)c(n(c1=O)C)=O
n1(C)c2c(n(cn2)C)c(n(C)c1=O)=O
n1(C)c2c(c(=O)n(c1=O)C)n(C)cn2
n1(C)c2c(c(=O)n(c1=O)C)n(cn2)C
n1(C)c2c(c(=O)n(C)c1=O)n(C)cn2
n1(C)c2c(c(=O)n(C)c1=O)n(cn2)C
n1(C)c2c(c(n(c1=O)C)=O)n(C)cn2
n1(C)c2c(c(n(c1=O)C)=O)n(cn2)C
n1(C)c2c(c(n(C)c1=O)=O)n(C)cn2
n1(C)c2c(c(n(C)c1=O)=O)n(cn2)C
n1(C)c2ncn(C)c2c(=O)n(c1=O)C
n1(C)c2ncn(C)c2c(=O)n(C)c1=O
n1(C)c2ncn(C)c2c(n(c1=O)C)=O
n1(C)c2ncn(C)c2c(n(C)c1=O)=O
n1(C)c2ncn(c2c(=O)n(c1=O)C)C
n1(C)c2ncn(c2c(=O)n(C)c1=O)C
n1(C)c2ncn(c2c(n(c1=O)C)=O)C
n1(C)c2ncn(c2c(n(C)c1=O)=O)C
n1(C)c(ncn2C)c2c(=O)n(c1=O)C
n1(C)c(ncn2C)c2c(=O)n(C)c1=O
n1(C)c(ncn2C)c2c(n(c1=O)C)=O
n1(C)c(ncn2C)c2c(n(C)c1=O)=O
n1(C)c(c2c(=O)n(c1=O)C)ncn2C
n1(C)c(c2c(=O)n(C)c1=O)ncn2C
n1(C)c(c2c(n(c1=O)C)=O)ncn2C
n1(C)c(c2c(n(C)c1=O)=O)ncn2C
n1(C)c(c(n2C)c(=O)n(c1=O)C)nc2
n1(C)c(c(n2C)c(=O)n(C)c1=O)nc2
n1(C)c(c(n2C)c(n(c1=O)C)=O)nc2
n1(C)c(c(n2C)c(n(C)c1=O)=O)nc2
n1(C)c(c(c(=O)n(c1=O)C)n2C)nc2
n1(C)c(c(c(=O)n(C)c1=O)n2C)nc2
n1(C)c(c(c(n(c1=O)C)=O)n2C)nc2
n1(C)c(c(c(n(C)c1=O)=O)n2C)nc2
Cn1c(n(c(c2c1ncn2C)=O)C)=O
Cn1c(n(c(c2n(C)cnc12)=O)C)=O
Cn1c(n(c(c2n(C)cnc21)=O)C)=O
Cn1c(n(c(c2n(cnc12)C)=O)C)=O
Cn1c(n(c(c2n(cnc21)C)=O)C)=O
Cn1c(n(c(c(n2C)c1nc2)=O)C)=O
Cn1c(n(c(=O)c2c1ncn2C)C)=O
Cn1c(n(c(=O)c2n(C)cnc12)C)=O
Cn1c(n(c(=O)c2n(C)cnc21)C)=O
Cn1c(n(c(=O)c2n(cnc12)C)C)=O
Cn1c(n(c(=O)c2n(cnc21)C)C)=O
Cn1c(n(c(=O)c(n2C)c1nc2)C)=O
Cn1c(n(C)c(c2c1ncn2C)=O)=O
Cn1c(n(C)c(c2n(C)cnc12)=O)=O
Cn1c(n(C)c(c2n(C)cnc21)=O)=O
Cn1c(n(C)c(c2n(cnc12)C)=O)=O
Cn1c(n(C)c(c2n(cnc21)C)=O)=O
Cn1c(n(C)c(c(n2C)c1nc2)=O)=O
Cn1c(n(C)c(=O)c2c1ncn2C)=O
Cn1c(n(C)c(=O)c2n(C)cnc12)=O
Cn1c(n(C)c(=O)c2n(C)cnc21)=O
Cn1c(n(C)c(=O)c2n(cnc12)C)=O
Cn1c(n(C)c(=O)c2n(cnc21)C)=O
Cn1c(n(C)c(=O)c(n2C)c1nc2)=O
Cn1c(=O)n(c(c2c1ncn2C)=O)C
Cn1c(=O)n(c(c2n(C)cnc12)=O)C
Cn1c(=O)n(c(c2n(C)cnc21)=O)C
Cn1c(=O)n(c(c2n(cnc12)C)=O)C
Cn1c(=O)n(c(c2n(cnc21)C)=O)C
Cn1c(=O)n(c(c(n2C)c1nc2)=O)C
Cn1c(=O)n(c(=O)c2c1ncn2C)C
Cn1c(=O)n(c(=O)c2n(C)cnc12)C
Cn1c(=O)n(c(=O)c2n(C)cnc21)C
Cn1c(=O)n(c(=O)c2n(cnc12)C)C
Cn1c(=O)n(c(=O)c2n(cnc21)C)C
Cn1c(=O)n(c(=O)c(n2C)c1nc2)C
Cn1c(=O)n(C)c(c2c1ncn2C)=O
Cn1c(=O)n(C)c(c2n(C)cnc12)=O
Cn1c(=O)n(C)c(c2n(C)cnc21)=O
Cn1c(=O)n(C)c(c2n(cnc12)C)=O
Cn1c(=O)n(C)c(c2n(cnc21)C)=O
Cn1c(=O)n(C)c(c(n2C)c1nc2)=O
Cn1c(=O)n(C)c(=O)c2c1ncn2C
Cn1c(=O)n(C)c(=O)c2n(C)cnc12
Cn1c(=O)n(C)c(=O)c2n(C)cnc21
Cn1c(=O)n(C)c(=O)c2n(cnc12)C
Cn1c(=O)n(C)c(=O)c2n(cnc21)C
Cn1c(=O)n(C)c(=O)c(n2C)c1nc2
Cn1c2c(n(C)cn2)c(=O)n(c1=O)C
Cn1c2c(n(C)cn2)c(=O)n(C)c1=O
Cn1c2c(n(C)cn2)c(n(c1=O)C)=O
Cn1c2c(n(C)cn2)c(n(C)c1=O)=O
Cn1c2c(n(cn2)C)c(=O)n(c1=O)C
Cn1c2c(n(cn2)C)c(=O)n(C)c1=O
Cn1c2c(n(cn2)C)c(n(c1=O)C)=O
Cn1c2c(n(cn2)C)c(n(C)c1=O)=O
Cn1c2c(c(=O)n(c1=O)C)n(C)cn2
Cn1c2c(c(=O)n(c1=O)C)n(cn2)C
Cn1c2c(c(=O)n(C)c1=O)n(C)cn2
Cn1c2c(c(=O)n(C)c1=O)n(cn2)C
Cn1c2c(c(n(c1=O)C)=O)n(C)cn2
Cn1c2c(c(n(c1=O)C)=O)n(cn2)C
Cn1c2c(c(n(C)c1=O)=O)n(C)cn2
Cn1c2c(c(n(C)c1=O)=O)n(cn2)C
Cn1c2ncn(C)c2c(=O)n(c1=O)C
Cn1c2ncn(C)c2c(=O)n(C)c1=O
Cn1c2ncn(C)c2c(n(c1=O)C)=O
Cn1c2ncn(C)c2c(n(C)c1=O)=O
Cn1c2ncn(c2c(=O)n(c1=O)C)C
Cn1c2ncn(c2c(=O)n(C)c1=O)C
Cn1c2ncn(c2c(n(c1=O)C)=O)C
Cn1c2ncn(c2c(n(C)c1=O)=O)C
Cn1c(ncn2C)c2c(=O)n(c1=O)C
Cn1c(ncn2C)c2c(=O)n(C)c1=O
Cn1c(ncn2C)c2c(n(c1=O)C)=O
Cn1c(ncn2C)c2c(n(C)c1=O)=O
Cn1c(c2c(=O)n(c1=O)C)ncn2C
Cn1c(c2c(=O)n(C)c1=O)ncn2C
Cn1c(c2c(n(c1=O)C)=O)ncn2C
Cn1c(c2c(n(C)c1=O)=O)ncn2C
Cn1c(c(n2C)c(=O)n(c1=O)C)nc2
Cn1c(c(n2C)c(=O)n(C)c1=O)nc2
Cn1c(c(n2C)c(n(c1=O)C)=O)nc2
Cn1c(c(n2C)c(n(C)c1=O)=O)nc2
Cn1c(c(c(=O)n(c1=O)C)n2C)nc2
Cn1c(c(c(=O)n(C)c1=O)n2C)nc2
Cn1c(c(c(n(c1=O)C)=O)n2C)nc2
Cn1c(c(c(n(C)c1=O)=O)n2C)nc2
Cn(c1c2n(C)cn1)c(n(c2=O)C)=O
Cn(c1c2n(C)cn1)c(n(C)c2=O)=O
Cn(c1c2n(C)cn1)c(=O)n(c2=O)C
Cn(c1c2n(C)cn1)c(=O)n(C)c2=O
Cn(c1c2n(cn1)C)c(n(c2=O)C)=O
Cn(c1c2n(cn1)C)c(n(C)c2=O)=O
Cn(c1c2n(cn1)C)c(=O)n(c2=O)C
Cn(c1c2n(cn1)C)c(=O)n(C)c2=O
Cn(c1c(n(C)cn1)c2=O)c(n2C)=O
Cn(c1c(n(C)cn1)c2=O)c(=O)n2C
Cn(c1c(n(C)cn1)c(=O)n2C)c2=O
Cn(c1c(n(C)cn1)c(n2C)=O)c2=O
Cn(c1c(n(cn1)C)c2=O)c(n2C)=O
Cn(c1c(n(cn1)C)c2=O)c(=O)n2C
Cn(c1c(n(cn1)C)c(=O)n2C)c2=O
Cn(c1c(n(cn1)C)c(n2C)=O)c2=O
Cn(c1c(c2=O)n(C)cn1)c(n2C)=O
Cn(c1c(c2=O)n(C)cn1)c(=O)n2C
Cn(c1c(c2=O)n(cn1)C)c(n2C)=O
Cn(c1c(c2=O)n(cn1)C)c(=O)n2C
Cn(c1c(c(=O)n2C)n(C)cn1)c2=O
Cn(c1c(c(=O)n2C)n(cn1)C)c2=O
Cn(c1c(c(n2C)=O)n(C)cn1)c2=O
Cn(c1c(c(n2C)=O)n(cn1)C)c2=O
Cn(c1ncn2C)c(n(c(c21)=O)C)=O
Cn(c1ncn2C)c(n(c(c12)=O)C)=O
Cn(c1ncn2C)c(n(c(=O)c21)C)=O
Cn(c1ncn2C)c(n(c(=O)c12)C)=O
Cn(c1ncn2C)c(n(C)c(c21)=O)=O
Cn(c1ncn2C)c(n(C)c(c12)=O)=O
Cn(c1ncn2C)c(n(C)c(=O)c21)=O
Cn(c1ncn2C)c(n(C)c(=O)c12)=O
Cn(c1ncn2C)c(=O)n(c(c21)=O)C
Cn(c1ncn2C)c(=O)n(c(c12)=O)C
Cn(c1ncn2C)c(=O)n(c(=O)c21)C
Cn(c1ncn2C)c(=O)n(c(=O)c12)C
Cn(c1ncn2C)c(=O)n(C)c(c21)=O
Cn(c1ncn2C)c(=O)n(C)c(c12)=O
Cn(c1ncn2C)c(=O)n(C)c(=O)c21
Cn(c1ncn2C)c(=O)n(C)c(=O)c12
Cn(c1ncn(C)c1c2=O)c(n2C)=O
Cn(c1ncn(C)c1c2=O)c(=O)n2C
Cn(c1ncn(C)c1c(=O)n2C)c2=O
Cn(c1ncn(C)c1c(n2C)=O)c2=O
Cn(c1ncn(c1c2=O)C)c(n2C)=O
Cn(c1ncn(c1c2=O)C)c(=O)n2C
Cn(c1ncn(c1c(=O)n2C)C)c2=O
Cn(c1ncn(c1c(n2C)=O)C)c2=O
Cn(c(ncn1C)c1c2=O)c(n2C)=O
Cn(c(ncn1C)c1c2=O)c(=O)n2C
Cn(c(ncn1C)c1c(=O)n2C)c2=O
Cn(c(ncn1C)c1c(n2C)=O)c2=O
Cn(c(c1c2=O)ncn1C)c(n2C)=O
Cn(c(c1c2=O)ncn1C)c(=O)n2C
Cn(c(c1c(=O)n2C)ncn1C)c2=O
Cn(c(c1c(n2C)=O)ncn1C)c2=O
Cn(c(c1n2C)nc2)c(n(c1=O)C)=O
Cn(c(c1n2C)nc2)c(n(C)c1=O)=O
Cn(c(c1n2C)nc2)c(=O)n(c1=O)C
Cn(c(c1n2C)nc2)c(=O)n(C)c1=O
Cn(c(c(n1C)c2=O)nc1)c(n2C)=O
Cn(c(c(n1C)c2=O)nc1)c(=O)n2C
Cn(c(c(n1C)c(=O)n2C)nc1)c2=O
Cn(c(c(n1C)c(n2C)=O)nc1)c2=O
Cn(c(c(c1=O)n2C)nc2)c(n1C)=O
Cn(c(c(c1=O)n2C)nc2)c(=O)n1C
Cn(c(c(c(=O)n1C)n2C)nc2)c1=O
Cn(c(c(c(n1C)=O)n2C)nc2)c1=O
Cn(c1=O)c2c(n(C)cn2)c(=O)n1C
Cn(c1=O)c2c(n(C)cn2)c(n1C)=O
Cn(c1=O)c2c(n(cn2)C)c(=O)n1C
Cn(c1=O)c2c(n(cn2)C)c(n1C)=O
Cn(c1=O)c2c(c(=O)n1C)n(C)cn2
Cn(c1=O)c2c(c(=O)n1C)n(cn2)C
Cn(c1=O)c2c(c(n1C)=O)n(C)cn2
Cn(c1=O)c2c(c(n1C)=O)n(cn2)C
Cn(c1=O)c2ncn(C)c2c(=O)n1C
Cn(c1=O)c2ncn(C)c2c(n1C)=O
Cn(c1=O)c2ncn(c2c(=O)n1C)C
Cn(c1=O)c2ncn(c2c(n1C)=O)C
Cn(c1=O)c(ncn2C)c2c(=O)n1C
Cn(c1=O)c(ncn2C)c2c(n1C)=O
Cn(c1=O)c(c2c(=O)n1C)ncn2C
Cn(c1=O)c(c2c(n1C)=O)ncn2C
Cn(c1=O)c(c(n2C)c(=O)n1C)nc2
Cn(c1=O)c(c(n2C)c(n1C)=O)nc2
Cn(c1=O)c(c(c(=O)n1C)n2C)nc2
Cn(c1=O)c(c(c(n1C)=O)n2C)nc2
Cn(c(n1C)=O)c2c(n(C)cn2)c1=O
Cn(c(n1C)=O)c2c(n(cn2)C)c1=O
Cn(c(n1C)=O)c2c(c1=O)n(C)cn2
Cn(c(n1C)=O)c2c(c1=O)n(cn2)C
Cn(c(n1C)=O)c2ncn(C)c2c1=O
Cn(c(n1C)=O)c2ncn(c2c1=O)C
Cn(c(n1C)=O)c(ncn2C)c2c1=O
Cn(c(n1C)=O)c(c2c1=O)ncn2C
Cn(c(n1C)=O)c(c(n2C)c1=O)nc2
Cn(c(n1C)=O)c(c(c1=O)n2C)nc2
Cn(c(n(c1=O)C)=O)c2c1n(C)cn2
Cn(c(n(c1=O)C)=O)c2c1n(cn2)C
Cn(c(n(c1=O)C)=O)c2ncn(C)c21
Cn(c(n(c1=O)C)=O)c2ncn(C)c12
Cn(c(n(c1=O)C)=O)c2ncn(c21)C
Cn(c(n(c1=O)C)=O)c2ncn(c12)C
Cn(c(n(c1=O)C)=O)c(ncn2C)c21
Cn(c(n(c1=O)C)=O)c(ncn2C)c12
Cn(c(n(c1=O)C)=O)c(c1n2C)nc2
Cn(c(n(c(c1n2C)=O)C)=O)c1nc2
Cn(c(n(c(=O)c1n2C)C)=O)c1nc2
Cn(c(n(C)c1=O)=O)c2c1n(C)cn2
Cn(c(n(C)c1=O)=O)c2c1n(cn2)C
Cn(c(n(C)c1=O)=O)c2ncn(C)c21
Cn(c(n(C)c1=O)=O)c2ncn(C)c12
Cn(c(n(C)c1=O)=O)c2ncn(c21)C
Cn(c(n(C)c1=O)=O)c2ncn(c12)C
Cn(c(n(C)c1=O)=O)c(ncn2C)c21
Cn(c(n(C)c1=O)=O)c(ncn2C)c12
Cn(c(n(C)c1=O)=O)c(c1n2C)nc2
Cn(c(n(C)c(c1n2C)=O)=O)c1nc2
Cn(c(n(C)c(=O)c1n2C)=O)c1nc2
Cn(c(=O)n1C)c2c(n(C)cn2)c1=O
Cn(c(=O)n1C)c2c(n(cn2)C)c1=O
Cn(c(=O)n1C)c2c(c1=O)n(C)cn2
Cn(c(=O)n1C)c2c(c1=O)n(cn2)C
Cn(c(=O)n1C)c2ncn(C)c2c1=O
Cn(c(=O)n1C)c2ncn(c2c1=O)C
Cn(c(=O)n1C)c(ncn2C)c2c1=O
Cn(c(=O)n1C)c(c2c1=O)ncn2C
Cn(c(=O)n1C)c(c(n2C)c1=O)nc2
Cn(c(=O)n1C)c(c(c1=O)n2C)nc2
Cn(c(=O)n(c1=O)C)c2c1n(C)cn2
Cn(c(=O)n(c1=O)C)c2c1n(cn2)C
Cn(c(=O)n(c1=O)C)c2ncn(C)c21
Cn(c(=O)n(c1=O)C)c2ncn(C)c12
Cn(c(=O)n(c1=O)C)c2ncn(c21)C
Cn(c(=O)n(c1=O)C)c2ncn(c12)C
Cn(c(=O)n(c1=O)C)c(ncn2C)c21
Cn(c(=O)n(c1=O)C)c(ncn2C)c12
Cn(c(=O)n(c1=O)C)c(c1n2C)nc2
Cn(c(=O)n(c(c1n2C)=O)C)c1nc2
Cn(c(=O)n(c(=O)c1n2C)C)c1nc2
Cn(c(=O)n(C)c1=O)c2c1n(C)cn2
Cn(c(=O)n(C)c1=O)c2c1n(cn2)C
Cn(c(=O)n(C)c1=O)c2ncn(C)c21
Cn(c(=O)n(C)c1=O)c2ncn(C)c12
Cn(c(=O)n(C)c1=O)c2ncn(c21)C
Cn(c(=O)n(C)c1=O)c2ncn(c12)C
Cn(c(=O)n(C)c1=O)c(ncn2C)c21
Cn(c(=O)n(C)c1=O)c(ncn2C)c12
Cn(c(=O)n(C)c1=O)c(c1n2C)nc2
Cn(c(=O)n(C)c(c1n2C)=O)c1nc2
Cn(c(=O)n(C)c(=O)c1n2C)c1nc2
Cn1c(=O)n(c2c(n(C)cn2)c1=O)C
Cn1c(=O)n(c2c(n(cn2)C)c1=O)C
Cn1c(=O)n(c2c(c1=O)n(C)cn2)C
Cn1c(=O)n(c2c(c1=O)n(cn2)C)C
Cn1c(=O)n(c2ncn(C)c2c1=O)C
Cn1c(=O)n(c2ncn(c2c1=O)C)C
Cn1c(=O)n(c(ncn2C)c2c1=O)C
Cn1c(=O)n(c(c2c1=O)ncn2C)C
Cn1c(=O)n(c(c(n2C)c1=O)nc2)C
Cn1c(=O)n(c(c(c1=O)n2C)nc2)C
Cn1c(=O)n(C)c2c(n(C)cn2)c1=O
Cn1c(=O)n(C)c2c(n(cn2)C)c1=O
Cn1c(=O)n(C)c2c(c1=O)n(C)cn2
Cn1c(=O)n(C)c2c(c1=O)n(cn2)C
Cn1c(=O)n(C)c2ncn(C)c2c1=O
Cn1c(=O)n(C)c2ncn(c2c1=O)C
Cn1c(=O)n(C)c(ncn2C)c2c1=O
Cn1c(=O)n(C)c(c2c1=O)ncn2C
Cn1c(=O)n(C)c(c(n2C)c1=O)nc2
Cn1c(=O)n(C)c(c(c1=O)n2C)nc2
Cn1c(n(c2c(n(C)cn2)c1=O)C)=O
Cn1c(n(c2c(n(cn2)C)c1=O)C)=O
Cn1c(n(c2c(c1=O)n(C)cn2)C)=O
Cn1c(n(c2c(c1=O)n(cn2)C)C)=O
Cn1c(n(c2ncn(C)c2c1=O)C)=O
Cn1c(n(c2ncn(c2c1=O)C)C)=O
Cn1c(n(c(ncn2C)c2c1=O)C)=O
Cn1c(n(c(c2c1=O)ncn2C)C)=O
Cn1c(n(c(c(n2C)c1=O)nc2)C)=O
Cn1c(n(c(c(c1=O)n2C)nc2)C)=O
Cn1c(n(C)c2c(n(C)cn2)c1=O)=O
Cn1c(n(C)c2c(n(cn2)C)c1=O)=O
Cn1c(n(C)c2c(c1=O)n(C)cn2)=O
Cn1c(n(C)c2c(c1=O)n(cn2)C)=O
Cn1c(n(C)c2ncn(C)c2c1=O)=O
Cn1c(n(C)c2ncn(c2c1=O)C)=O
Cn1c(n(C)c(ncn2C)c2c1=O)=O
Cn1c(n(C)c(c2c1=O)ncn2C)=O
Cn1c(n(C)c(c(n2C)c1=O)nc2)=O
Cn1c(n(C)c(c(c1=O)n2C)nc2)=O
Cn1c(c2c(ncn2C)n(c1=O)C)=O
Cn1c(c2c(ncn2C)n(C)c1=O)=O
Cn1c(c2c(n(c1=O)C)ncn2C)=O
Cn1c(c2c(n(C)c1=O)ncn2C)=O
Cn1c(c2n(C)cnc2n(c1=O)C)=O
Cn1c(c2n(C)cnc2n(C)c1=O)=O
Cn1c(c2n(cnc2n(c1=O)C)C)=O
Cn1c(c2n(cnc2n(C)c1=O)C)=O
Cn1c(c(n2C)c(nc2)n(c1=O)C)=O
Cn1c(c(n2C)c(nc2)n(C)c1=O)=O
Cn1c(c(n2C)c(n(c1=O)C)nc2)=O
Cn1c(c(n2C)c(n(C)c1=O)nc2)=O
Cn1c(c(c2n(c1=O)C)n(C)cn2)=O
Cn1c(c(c2n(c1=O)C)n(cn2)C)=O
Cn1c(c(c2n(C)c1=O)n(C)cn2)=O
Cn1c(c(c2n(C)c1=O)n(cn2)C)=O
Cn1c(=O)c2c(ncn2C)n(c1=O)C
Cn1c(=O)c2c(ncn2C)n(C)c1=O
Cn1c(=O)c2c(n(c1=O)C)ncn2C
Cn1c(=O)c2c(n(C)c1=O)ncn2C
Cn1c(=O)c2n(C)cnc2n(c1=O)C
Cn1c(=O)c2n(C)cnc2n(C)c1=O
Cn1c(=O)c2n(cnc2n(c1=O)C)C
Cn1c(=O)c2n(cnc2n(C)c1=O)C
Cn1c(=O)c(n2C)c(nc2)n(c1=O)C
Cn1c(=O)c(n2C)c(nc2)n(C)c1=O
Cn1c(=O)c(n2C)c(n(c1=O)C)nc2
Cn1c(=O)c(n2C)c(n(C)c1=O)nc2
Cn1c(=O)c(c2n(c1=O)C)n(C)cn2
Cn1c(=O)c(c2n(c1=O)C)n(cn2)C
Cn1c(=O)c(c2n(C)c1=O)n(C)cn2
Cn1c(=O)c(c2n(C)c1=O)n(cn2)C
Cn(c1=O)c(=O)n(c2c1n(C)cn2)C
Cn(c1=O)c(=O)n(c2c1n(cn2)C)C
Cn(c1=O)c(=O)n(c2ncn(C)c21)C
Cn(c1=O)c(=O)n(c2ncn(C)c12)C
Cn(c1=O)c(=O)n(c2ncn(c21)C)C
Cn(c1=O)c(=O)n(c2ncn(c12)C)C
Cn(c1=O)c(=O)n(c(ncn2C)c21)C
Cn(c1=O)c(=O)n(c(ncn2C)c12)C
Cn(c1=O)c(=O)n(c(c1n2C)nc2)C
Cn(c1=O)c(=O)n(C)c2c1n(C)cn2
Cn(c1=O)c(=O)n(C)c2c1n(cn2)C
Cn(c1=O)c(=O)n(C)c2ncn(C)c21
Cn(c1=O)c(=O)n(C)c2ncn(C)c12
Cn(c1=O)c(=O)n(C)c2ncn(c21)C
Cn(c1=O)c(=O)n(C)c2ncn(c12)C
Cn(c1=O)c(=O)n(C)c(ncn2C)c21
Cn(c1=O)c(=O)n(C)c(ncn2C)c12
Cn(c1=O)c(=O)n(C)c(c1n2C)nc2
Cn(c1=O)c(n(c2c1n(C)cn2)C)=O
Cn(c1=O)c(n(c2c1n(cn2)C)C)=O
Cn(c1=O)c(n(c2ncn(C)c21)C)=O
Cn(c1=O)c(n(c2ncn(C)c12)C)=O
Cn(c1=O)c(n(c2ncn(c21)C)C)=O
Cn(c1=O)c(n(c2ncn(c12)C)C)=O
Cn(c1=O)c(n(c(ncn2C)c21)C)=O
Cn(c1=O)c(n(c(ncn2C)c12)C)=O
Cn(c1=O)c(n(c(c1n2C)nc2)C)=O
Cn(c1=O)c(n(C)c2c1n(C)cn2)=O
Cn(c1=O)c(n(C)c2c1n(cn2)C)=O
Cn(c1=O)c(n(C)c2ncn(C)c21)=O
Cn(c1=O)c(n(C)c2ncn(C)c12)=O
Cn(c1=O)c(n(C)c2ncn(c21)C)=O
Cn(c1=O)c(n(C)c2ncn(c12)C)=O
Cn(c1=O)c(n(C)c(ncn2C)c21)=O
Cn(c1=O)c(n(C)c(ncn2C)c12)=O
Cn(c1=O)c(n(C)c(c1n2C)nc2)=O
Cn(c(c1c2ncn1C)=O)c(=O)n2C
Cn(c(c1c2ncn1C)=O)c(n2C)=O
Cn(c(c1c(ncn1C)n2C)=O)c2=O
Cn(c(c1c(n2C)ncn1C)=O)c2=O
Cn(c(c1n2C)=O)c(=O)n(c1nc2)C
Cn(c(c1n2C)=O)c(=O)n(C)c1nc2
Cn(c(c1n2C)=O)c(n(c1nc2)C)=O
Cn(c(c1n2C)=O)c(n(C)c1nc2)=O
Cn(c(c1n(C)cnc1n2C)=O)c2=O
Cn(c(c1n(cnc1n2C)C)=O)c2=O
Cn(c(c(n1C)c2nc1)=O)c(=O)n2C
Cn(c(c(n1C)c2nc1)=O)c(n2C)=O
Cn(c(c(n1C)c(nc1)n2C)=O)c2=O
Cn(c(c(n1C)c(n2C)nc1)=O)c2=O
Cn(c(c(c1n2C)n(C)cn1)=O)c2=O
Cn(c(c(c1n2C)n(cn1)C)=O)c2=O
Cn(c(=O)c1c2ncn1C)c(=O)n2C
Cn(c(=O)c1c2ncn1C)c(n2C)=O
Cn(c(=O)c1c(ncn1C)n2C)c2=O
Cn(c(=O)c1c(n2C)ncn1C)c2=O
Cn(c(=O)c1n2C)c(=O)n(c1nc2)C
Cn(c(=O)c1n2C)c(=O)n(C)c1nc2
Cn(c(=O)c1n2C)c(n(c1nc2)C)=O
Cn(c(=O)c1n2C)c(n(C)c1nc2)=O
Cn(c(=O)c1n(C)cnc1n2C)c2=O
Cn(c(=O)c1n(cnc1n2C)C)c2=O
Cn(c(=O)c(n1C)c2nc1)c(=O)n2C
Cn(c(=O)c(n1C)c2nc1)c(n2C)=O
Cn(c(=O)c(n1C)c(nc1)n2C)c2=O
Cn(c(=O)c(n1C)c(n2C)nc1)c2=O
Cn(c(=O)c(c1n2C)n(C)cn1)c2=O
Cn(c(=O)c(c1n2C)n(cn1)C)c2=O
Cn(c1=O)c(c2c(ncn2C)n1C)=O
Cn(c1=O)c(c2c(n1C)ncn2C)=O
Cn(c1=O)c(c2n(C)cnc2n1C)=O
Cn(c1=O)c(c2n(cnc2n1C)C)=O
Cn(c1=O)c(c(n2C)c(nc2)n1C)=O
Cn(c1=O)c(c(n2C)c(n1C)nc2)=O
Cn(c1=O)c(c(c2n1C)n(C)cn2)=O
Cn(c1=O)c(c(c2n1C)n(cn2)C)=O
Cn(c1=O)c(=O)c2c(ncn2C)n1C
Cn(c1=O)c(=O)c2c(n1C)ncn2C
Cn(c1=O)c(=O)c2n(C)cnc2n1C
Cn(c1=O)c(=O)c2n(cnc2n1C)C
Cn(c1=O)c(=O)c(n2C)c(nc2)n1C
Cn(c1=O)c(=O)c(n2C)c(n1C)nc2
Cn(c1=O)c(=O)c(c2n1C)n(C)cn2
Cn(c1=O)c(=O)c(c2n1C)n(cn2)C
Cn(c(=O)n1C)c(c2c1ncn2C)=O
Cn(c(=O)n1C)c(c2n(C)cnc12)=O
Cn(c(=O)n1C)c(c2n(C)cnc21)=O
Cn(c(=O)n1C)c(c2n(cnc12)C)=O
Cn(c(=O)n1C)c(c2n(cnc21)C)=O
Cn(c(=O)n1C)c(c(n2C)c1nc2)=O
Cn(c(=O)n1C)c(=O)c2c1ncn2C
Cn(c(=O)n1C)c(=O)c2n(C)cnc12
Cn(c(=O)n1C)c(=O)c2n(C)cnc21
Cn(c(=O)n1C)c(=O)c2n(cnc12)C
Cn(c(=O)n1C)c(=O)c2n(cnc21)C
Cn(c(=O)n1C)c(=O)c(n2C)c1nc2
Cn(c(=O)n(c1c2n(C)cn1)C)c2=O
Cn(c(=O)n(c1c2n(cn1)C)C)c2=O
Cn(c(=O)n(c1ncn2C)C)c(c21)=O
Cn(c(=O)n(c1ncn2C)C)c(c12)=O
Cn(c(=O)n(c1ncn2C)C)c(=O)c21
Cn(c(=O)n(c1ncn2C)C)c(=O)c12
Cn(c(=O)n(c(c1n2C)nc2)C)c1=O
Cn(c(=O)n(C)c1c2n(C)cn1)c2=O
Cn(c(=O)n(C)c1c2n(cn1)C)c2=O
Cn(c(=O)n(C)c1ncn2C)c(c21)=O
Cn(c(=O)n(C)c1ncn2C)c(c12)=O
Cn(c(=O)n(C)c1ncn2C)c(=O)c21
Cn(c(=O)n(C)c1ncn2C)c(=O)c12
Cn(c(=O)n(C)c(c1n2C)nc2)c1=O
Cn(c(n1C)=O)c(c2c1ncn2C)=O
Cn(c(n1C)=O)c(c2n(C)cnc12)=O
Cn(c(n1C)=O)c(c2n(C)cnc21)=O
Cn(c(n1C)=O)c(c2n(cnc12)C)=O
Cn(c(n1C)=O)c(c2n(cnc21)C)=O
Cn(c(n1C)=O)c(c(n2C)c1nc2)=O
Cn(c(n1C)=O)c(=O)c2c1ncn2C
Cn(c(n1C)=O)c(=O)c2n(C)cnc12
Cn(c(n1C)=O)c(=O)c2n(C)cnc21
Cn(c(n1C)=O)c(=O)c2n(cnc12)C
Cn(c(n1C)=O)c(=O)c2n(cnc21)C
Cn(c(n1C)=O)c(=O)c(n2C)c1nc2
Cn(c(n(c1c2n(C)cn1)C)=O)c2=O
Cn(c(n(c1c2n(cn1)C)C)=O)c2=O
Cn(c(n(c1ncn2C)C)=O)c(c21)=O
Cn(c(n(c1ncn2C)C)=O)c(c12)=O
Cn(c(n(c1ncn2C)C)=O)c(=O)c21
Cn(c(n(c1ncn2C)C)=O)c(=O)c12
Cn(c(n(c(c1n2C)nc2)C)=O)c1=O
Cn(c(n(C)c1c2n(C)cn1)=O)c2=O
Cn(c(n(C)c1c2n(cn1)C)=O)c2=O
Cn(c(n(C)c1ncn2C)=O)c(c21)=O
Cn(c(n(C)c1ncn2C)=O)c(c12)=O
Cn(c(n(C)c1ncn2C)=O)c(=O)c21
Cn(c(n(C)c1ncn2C)=O)c(=O)c12
Cn(c(n(C)c(c1n2C)nc2)=O)c1=O

Compared to connection tables, such as MDL Mol files, this permutation count is actually quite limited.  A molecule with n atoms and m bonds typically has n!m!2m possible connection tables.  For Caffeine, with 14 heavy atoms and 15 bonds between them, this is over 3.735×1027 equivalent connection tables.

However, the 4160 permuted SMILES orderings above are just the tip of the iceberg of the true potential number of valid SMILES representations that have the exact same Caffeine InChI.

As Roger Rabbit aptly said in the film ‘Who Framed Roger Rabbit?’, “Let me count the ways… One one-thousand…”

Next, we can consider the possible of lexical forms of each atom.  Rather than the single character atoms used in Cn1cnc2c1c(=O)n(c(=O)n2C)C, we can instead (optionally and independently) use bracketed forms for each atom such as:

Cn1[cH]nc2c1c(=O)n(c(=O)n2C)C
C[n]1cnc2c1c(=O)[n](c(=O)[n]2C)C
[CH3][n]1[cH][n][c]2[c]1[c](=[O])[n]([c](=[O])[n]2[CH3])[CH3]

This alone leads to 16384 variants for each of the 4160 permutations above.

Next, we can consider the effects of aromaticity, as each aromatic ring may be represented as either aromatic or explicitly in each of its conjugated Kekule forms.  Four Caffeine case study, examples include:

Cn1cnc2c1c(=O)n(c(=O)n2C)C
Cn1cnc2c1C(=O)N(C(=O)N2C)C
CN1C=NC2=C1C(=O)N(C(=O)N2C)C

Next, we can consider the use of explicit vs. implicit hydrogen atoms. Zero, some or all of the hydrogen atoms on each heavy atom may be denoted explicitly. With three methyl groups and hydrogen bearing aromatic carbon, this leads us to 4*4*4*2=128 explicit hydrogen variants, including:

[H]C([H])([H])n1c([H])nc2c1c(=O)n(c(=O)n2C([H])([H])[H])C([H])([H])[H]
[H]Cn1c([H])nc2c1c(=O)n(c(=O)n2C[H])C[H]
[H]Cn1cnc2c1c(=O)n(c(=O)n2C[H])C[H]
Cn1c([H])nc2c1c(=O)n(c(=O)n2C)C

Alas, there are no polar hydrogen atoms in Caffeine, so alternate tautomeric forms, potentially one of the richest sources of SMILES with the same InChI, aren’t applicable in this example.

However, even more mind-bending than tautomerism are the multiple potential mesomeric forms of molecule, created by shuffling formal charges around a molecule whilst respecting the valency rules at each atom. Zwitterionic forms of Caffeine include:

C[n+]1c[n-]c2c1c(=O)n(c(=O)n2C)C

Cn1cnc2c1c([O-])[n+](c(=O)n2C)C
Cn1cnc2c1c(=O)[n+](c([O-])n2C)C
Cn1cnc2c1c(=O)n(c([O-])[n+]2C)C
Cn1cnc2c1c([O-])n(c(=O)[n+]2C)C

C[n+]1c[n-]c2c1c([O-])[n+](c(=O)n2C)C
C[n+]1c[n-]c2c1c(=O)[n+](c([O-])n2C)C
C[n+]1c[n-]c2c1c(=O)n(c([O-])[n+]2C)C
C[n+]1c[n-]c2c1c2c1c([O-])n(c(=O)[n+]2C)C

Cn1cnc2c1c([O-])[n+](c([O-])[n+]2C)C
C[n+]1c[n-]c2c1c([O-])[n+](c([O-])[n+]2C)C

C[n+]1c[n-]c2c1c([O-])[n+](c([O-])[n+]2C)C

All of the above zwitterions are “traditional”, only placing formal charges on polar atoms, but continuing the madness even further considers all the following to be mesomeric forms of Caffeine:

Cn1cnc2c1[c+]([O-])n(c(=O)n2C)C
Cn1cnc2c1c(=O)n([c+]([O-])n2C)C
Cn1cnc2c1[c+]([O-])n([c+]([O-])n2C)C

Finally, ylid-like mesomerism may often be used to eliminate bond orders from connection tables, producing one of my favourite representations of Caffeine, one without any double bonds:

Cn1[cH+][n-][c+]2[c-]1[c+]([O-])n([c+]([O-])n2C)C

This, along with all of the millions of Caffeine SMILES variants outlined above, has the exact same InChI:

InChI=1S/C8H10N4O2/c1-10-4-9-6-5(10)7(13)12(3)8(14)11(6)2/h4H,1-3H3

That all of these SMILES are represented by the same unique InChI is very useful in many applications. However, that any of these SMILES may potentially be presented to the user as a legitimate example/depiction of that InChI can also be a liability. Whoops – I said no discussion of InChI versus SMILES. 🙂

Image credit: oswaldo on Twitter.

Validity checking antibody sequence data

NextMove Software’s Sugar & Splice product is a toolkit for handling biopolymers, including oligopeptides, oliogonucleotides and oligosaccharides (and combinations thereof). Amongst its many possible applications is the ability to rapidly identify possible errors in the sequences of antibodies (during registration). Therapeutic antibodies are increasingly important to the pharmaceutical industry, with about 8 out of the top 20 selling drugs being monoclonal antibody therapeutics. Antibodies are large covalently bound molecules, formed of four protein chains cross-linked by disulfide bonds. These polypeptide chains consist of two longer “heavy” chains and two shorter “light” chains. Almost always (with the exception of synthetic bispecific antibodies), the sequences of the two heavy chains in each antibody are identical, and the sequences of the two light chains are identical.

The most defining characteristic of these heavy and light chains, as implied by their names, are their lengths. Heavy chains are almost always between 432 and 456 amino acids long, and light chains are almost always 204 to 220 amino acids long. This very naturally suggests an incredibly simple sanity check (during antibody sequence registration); namely that the light and heavy chains are within their correct length ranges respectively. A major benefit of therapeutic antibodies over arbitrary peptide and protein therapeutics relies on their not being recognized as “foreign” by the patient’s immune system, and thereby avoiding the side-effects associated with an immune response. To achieve this an antibody drug must look very much like a native human antibody which places tight constraints on the length and composition of its constituent protein chains. This remarkably simple check is in practice effective at finding real problems in trusted data sources, as described by the three example failures below.

[1] Canakinumab light chain
Novartis’ canakinumab (sold under the tradename Ilaris) is a human antibody against IL-1β for the treatment of cryopyrin-associated periodic syndrome (CAPS). The sequence of the light chain in both DrugBank (DB06168) and ChEMBL (CHEMBL1201834) is 394 amino acids long, much longer than a typical light chain. Inspection of the drug bank FASTA records reveals the source of the error and the correction.

>8836_H|canakinumab|Homo sapiens||H-GAMMA-1 (VH(1-118)+CH1(119-216)+HINGE-REGION(217-231)+CH2(232-341)+CH3(342-448))|||||||448||||MW 49253.6|MW 49253.6|
QVQLVESGGGVVQPGRSLRLSCAASGFTFSVYGMNWVRQAPGKGLEWVAIIWYDGDNQYY
ADSVKGRFTISRDNSKNTLYLQMNGLRAEDTAVYYCARDLRTGPFDYWGQGTLVTVSSAS
TKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGL
YSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKRVEPKSCDKTHTCPPCPAPELLGGPS
VFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNST
YRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSREEMT
KNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQ
GNVFSCSVMHEALHNHYTQKSLSLSPGK
>8836_L|canakinumab|Homo sapiens||L-KAPPA (V-KAPPA(1-107)+C-KAPPA(108-214))|||||||214||||MW 23357.9|MW 23357.9|
QVQLVESGGGVVQPGRSLRLSCAASGFTFSVYGMNWVRQAPGKGLEWVAIIWYDGDNQYY
ADSVKGRFTISRDNSKNTLYLQMNGLRAEDTAVYYCARDLRTGPFDYWGQGTLVTVSSAS
TKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGL
EIVLTQSPDFQSVTPKEKVTITCRASQSIGSSLHWYQQKPDQSPKLLIKYASQSFSGVPS
RFSGSGSGTDFTLTINSLEAEDAAAYYCHQSSSLPFTFGPGTKVDIKRTVAAPSVFIFPP
SDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLT
LSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC

Notice that the first three lines of the light chain entry (8836_L) match identically the first three lines of the heavy chain entry (8836_H), probably due to a cut’n’paste error. The correct sequence for the light chain starts with the sequence “EIVL”, and indeed this is confirmed as the resulting sequence is 214 amino acids long, which both the length specified in the DrugBank FASTA header line and falls within our allowed length range.

[2] Adalimumab heavy chain
Abbott Laboratories’ (now AbbVie’s) Adalimumab, sold under the tradename Humira, is a human antibody against TNF-α for autoimmune disorders. Here the ChEMBL entry (CHEMBL1201580) lacks any sequence annotation for either chain, and DrugBank’s entry (DB00051) contains a heavy chain sequence of only 224 amino acids, too short to be the full sequence. This partial sequence fragment is actually just the Fab (antigen binding) domain of Adalimumab’s heavy chain. Searching online reveals a presentation from Jeremy Fry in 2012 that repeats this Fab fragment sequence (on slide 7) together with text “Full sequence information for Humira is not in the public domain”.

Fortunately, this is no longer the case as the full sequence of the heavy chain has now been published, found in a bitmap image (figure 8) in a PDF whitepaper from Thermo Fisher Scientific who use Adalimumab’s heavy chain as an example case study for intact antibody sequencing with the Orbitrap mass spectrometry hardware.

Here (possibly for the first time in machine-readable form) is the full sequence of Adalimumab’s heavy chain.

>Adalimumab_H
EVQLVESGGGLVQPGRSLRLSCAASGFTFDDYAMHWVRQAPGKGLEWVSAITWNSGHIDY
ADSVEGRFTISRDNAKNSLYLQMNSLRAEDTAVYYCAKVSYLSTASSLDYWGQGTLVTVS
SASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQS
SGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELLG
GPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNVYVDGVEVHNAKTKPREEQY
NSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRD
ELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSR
WQQGNVFSCSVMHEALHNHYTQKSLSLSPGK

[3] Cixutumumab heavy chain
ImClone Systems’ Cixutumumab is a human antibody against IGF-1R. The ChEMBL entry (CHEMBL1743001) provides a heavy chain sequence that is 460 amino acids long. Whilst not much longer than the permissible range, it does flag this sequence as suspicious. This is confirmed by sequence alignment, for example to the heavy chain of rafivirumab shown on the lower lines in the sequence alignment below.

SNSAlign (Needleman-Wunsch sequence alignment) version 0.9beta14
Copyright (C) 2014 NextMove Software Limited

Sequence 1 Length: 460
Sequence 2 Length: 456
Alignment Type: 1
Gap penalty:    -10
Extend penalty: -2
Alignment score: 1542
Identity:    78.73% (359/456)
Similarity:  81.58% (372/456)

    EVQLVQSGAEVKKPGSSVKVSCKASGGTFSSYAISWVRQAPGQGLEWMGGIIPIFGTANY 60
    |||||||||||||||||||||||||||||: | ::|||||||||||||||||||||||||
    EVQLVQSGAEVKKPGSSVKVSCKASGGTFNRYTVNWVRQAPGQGLEWMGGIIPIFGTANY 60

    LRFLEWSTQDGTAALGCLVKVPSSSLGTQTPSVFLFPPKPKTKPREEQYNKAKGQPREPQ 120
                                                                
    ------------------------------------------------------------ 60

    ENNYKTTPPVQKSLSLSPGKAQKFQGRVTITADKSTSTAYMELSSLRSEDTAVYYCAR-- 178
                        ||:||||:|||||:||||||||||||||:|||||:|||  
    --------------------AQRFQGRLTITADESTSTAYMELSSLRSDDTAVYFCAREN 100

    ----APHYYYY-YMDVWGKGTTVTVSSASTKGPSVFPLAPSSKSTSG----------DYF 223
          :||:  : | ||:|| |||||||||||||||||||||||||          |||
    LDNSGTYYYFSGWFDPWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYF 160

    PEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVV----------TYICNVNHKPSNTK 273
    ||||||||||||||||||||||||||||||||||||          ||||||||||||||
    PEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTK 220

    VDKKVEPKSCDKTHTCPPCPAPELLGG----------KDTLMISRTPEVTCVVVDVSHED 323
    |||:|||||||||||||||||||||||          |||||||||||||||||||||||
    VDKRVEPKSCDKTHTCPPCPAPELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHED 280

    PEVKFNWYVDGVEVHNA----------STYRVVSVLTVLHQDWLNGKEYKCKVSNKALPA 373
    |||||||||||||||||          |||||||||||||||||||||||||||||||||
    PEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPA 340

    PIEKTIS----------VYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQP--- 420
    |||||||          ||||||||||||||||||||||||||||||||||||||||   
    PIEKTISKAKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENN 400

    -------LDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYT--------- 460
           ||||||||||||||||||||||||||||||||||||||||         
    YKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPG 456

Alas this mysterious pattern of gaps doesn’t indicate the discovery of a novel human immunoglobulin transposon by the ChEMBL team in Hinxton, but another cut’n’paste error. In UNIPROT sequence file format, and often in patent filings, protein sequences are written in blocks of ten amino acids. The tell tale alignment above (which looks very pretty as a dotplot) indicates that one of the columns of this sequence file has been shuffled. If one looks closely, many of the missing 10-mers from the later lines, appear consecutively in the anomalous large insertion close to the start.

As demonstrated by the above examples, antibody sequence databases appear to contain a number of serious errors that can be caught/flagged by even simple quality checks. Fortunately, advanced antibody validation algorithms are able to identify far more subtle problems in large biologics registration systems, sometimes containing millions of entries. Hopefully, corrections for the above issues will shortly be seen in DrugBank, ChEMBL and IUPHAR databases.

On the other other hand

handsMy earlier “On the other hand” blog post considered some of the issues of representing D- amino acids. In this post, I discuss the representation of amino acids with sidechain stereochemistry in nomenclature and peptide registration systems. Handling of chiral sidechains is potentially tricky and non-trivial, as indicated by the Pistoia Alliance’s HELM editor which restricts the user to only 17 (of the 19) standard D-form amino acids, explicitly prohibiting the specification D-threonine and D-isoleucine.

Threonine (Thr) and Isoleucine (Ile)

The most frequently encountered cases of sidechain stereochemistry occur in the naturally occurring amino acids threonine and isoleucine, which each contain a chiral carbon atom at their beta carbon position.

subst_6 L-Thr  aka (2S,3R)    PDB Code: THR CID6288
subst_6 L-Ile aka (2S,3S)    PDB Code: ILE

CID6306

By convention, the D-forms of these amino acids flip both stereocenters.

subst_6 D-Thr   aka (2R,3S)  PDB Code: DTR CID69435
subst_6 D-Ile  aka (2R,3R)   PDB Code: DIL CID76551

The forms of these amino acids where just the sidechain stereochemistry is inverted are referred to as “allo-” forms, allothreonine (written aThr or alloThr) and alloisoleucine (written aIle or alloIle).

subst_6 L-aThr  aka (2S,3S)   PDB Code: ALO CID99289
subst_6 D-aThr   aka (2R,3R)  PDB Code: 2TL CID90624
subst_6 L-aIle aka (2S,3R)  PDB Code: IIL CID99288
subst_6 D-aIle  aka (2R,3S)  PDB Code: ??? CID94206

Things really get interesting when stereochemistry is unspecified (either a racemate or unresolved chiral center) at either of these stereocenters.  This is not uncommon when working with SMILES strings or MOL files, but almost always indicates some loss of information as the biology/chemistry will nearly universally refer to one of the four fully specified steroisomers above.

Perhaps the easiest case to denote is the case of unspecified tetrahedral stereochemistry at the alpha carbon position, for which the “DL-” prefix is conventionally used.

subst_6 DL-Thr  aka (2?,3R) CID17757244
subst_6 DL-aThr  aka (2?,3S) CID17757249
subst_6 DL-Ile aka (2?,3S) CID10396882
subst_6 DL-aIle aka (2?,3R) CID17757247

A less widely appreciated convention, is the use of the Greek letter xi (ξ) in amino acid and natural product nomenclature, for chiral centers of unknown configuration (3AA-4.5).  Here I propose the use of the prefix “xi” or “xi-” in an identical way to “allo” or “allo-” to produce xi-threonine (xiThr) and xi-isoleucine (xiIle) when the beta
carbon stereochemistry is undefined/unspecified.

subst_6 L-xiThr  aka (2S,3?) CID11768555
subst_6 D-xiThr  aka (2R,3?) CID6399258
subst_6 DL-xiThr  aka (2?,3?) CID205
subst_6 L-xiIle aka (2S,3?) CID5351546
subst_6 D-xiIle aka (2R,3?) CID11051686
subst_6 DL-xiIle aka (2?,3?) CID791

4-Hydroxyproline, Hyp

An example of a non-natural (but frequently occurring) amino acid with sidechain stereochemistry is “4-hydroxyproline”.  Here the symbol Hyp is understood to refer to the more common trans- form, so the prefix “cis” or “cis-” is use to refer to the alternate configuration, such as the symbol “cis-Hyp”.

subst_6 L-Hyp aka (2S,4R)    PDB Code: HYP CID5810
subst_6 L-cisHyp aka (2S,4S)  PDB Code: HZP CID440015
subst_6 D-Hyp aka (2R,4S)    PDB Code: ??? CID440074
subst_6 D-cisHyp aka (2R,4R)   PDB Code: ??? CID440014

Once again unspecified configurations at the alpha- and gamma- carbon locants of Hyp can be described by “DL-” and “xi-” prefixes as before.

subst_6 DL-Hyp aka (2?,4R) CID54196981
subst_6 DL-cisHyp aka (2?,4S) CID21353534
subst_6 L-xiHyp aka (2S,4?) CID69248
subst_6 D-xiHyp aka (2R,4?) CID5318330
subst_6 DL-xiHyp aka (2?,4?) CID825

Note that although a few sources refer to names such as “cis-D-Hyp”, it is more usual to order terms consistently (where possible) with the “D-“, “L-” or “DL-” prefix at the start and the “allo”, “xi”, “cis”, “nor” and “homo” prefixes adjacent to the three-letter code.

Methionine sulfoxide, Met(O)

A simpler case of sidechain stereochemistry occurs when the amino acid name doesn’t imply a default stereochemistry.  In these cases, the usual Cahn, Ingold and Prelog (CIP) rules can be used to assign R and S (or E and Z) descriptors appropriately.  A simple example of this is methionine sulfoxide, which is commonly represented by the symbol “Met(O)”. In this case, the sulfur atom bearing the substitution may adopt one of two configurations requiring a “R-” or “S-” prefix to the substituent suffix.

subst_6 L-Met(O) CID158980
subst_6 D-Met(O) CID148508
subst_6 DL-Met(O) CID847
subst_6 L-Met(R-O) CID10062737
subst_6 L-Met(S-O) CID10909908
subst_6 D-Met(R-O) CID11829787
subst_6 D-Met(S-O) CID9577091
subst_6 DL-Met(R-O) CID ???
subst_6 DL-Met(S-O) CID57148329

Image credit: EmsiProduction on Flickr

Explicit and Implicit Hydrogens: Taking liberties with valence

The field of cheminformatics has two concepts of implicit vs. explicit when it comes to talking about hydrogen atoms.  The first concept is at the internal data structure level where explicit hydrogens are each stored as an atom object (like any other element) vs. implicit hydrogens that exist only as a hydrogen count field associated with a parent atom.  The second concept is at the file format or line notation representation level where the number of hydrogens or valence is either explicitly specified vs. encodings where the hydrogen count is implicitly defined by some (often undocumented) valence model.  The existence of these two related but independent concepts is a recent personal realization after discovering what I’d previously called an “explicit hydrogen” differed from what OpenBabel or RDKit call an explicit hydrogen.

To demonstrate the difference consider the following three SMILES for methane:  “C”, “[CH4]” and “[H][C]([H])([H])[H]”.  All these SMILES represent the exact same molecule.  Most(?) cheminformatics would represent the first as a single atom internally where both the representation and count is implicit; the second by a single atom where the representation is implicit but the count is explicit, and the third by five atoms where the hydrogen atoms are explicit.  I say most toolkits as to make life interesting OpenBabel allocates real hydrogen atoms for “[CH4]”, and equally confusingly OpenEye’s OEChem toolkit will allocate a real hydrogen atom for implicit hydrogens at atoms with specified stereochemistry, i.e. as in “[C@H]” and “[C@@H]”.

An interesting side-effect of the above distinction is that molecular hydrogen, the most common molecule in the observable universe, can be represented by either “[H][H]” or “[HH]”.

Although described in relation to SMILES, the exact same distinction also holds for connection table file formats, such as the MDL/Symyx mol file format. The equivalent three variants of methane can be created as files with explicit atom records/lines for hydrogen atoms, as a single carbon atom line with an explicit valence of four, and as a single carbon atom line with a default valence (specified as a zero in the vvv columns of the atom block).  It’s important to honor the valence field vvv in an MDL/Symyx mol file, as for example “sodium metal” and “sodium hydride” are represented by connection tables with a single atom line, distinguished only by their valence.

Where things get fascinating (a.k.a problematic) are the cases that Donald Rumsfeld might call the “implicit implicits”, where (often to conserve space) the hydrogen count is to be implied from an atom’s environment; specifically its atomic number, formal charge and the bond orders of the bonds it participates in. This is the world of the valence model.

A valence model is used for defining (deriving) the number of hydrogens implicitly bonded to an atom.  For example, a neutral carbon may be assumed to be four-valent, implying that a neutral carbon with two explicit single bonds should have two implicit hydrogens.

Myth #1: There is a single universal valence model.

A common misconception is that there is or can exist a single valence model for chemical informatics.  The reality is that many vendors and cheminformatics toolkits implement their own interpretations of chemical valence, and correctly interacting with these toolkits requires matching the native models.  As a simple proof consider a neutral iodine with four single bonds to it, i.e. “CI(C)(C)C”.  In Daylight’s valence model this has no implicit hydrogens and is equivalent to “C[I](C)(C)C”, but in MDL’s valence model, neutral iodine is potentially one, three and five valent, so this compound has one implicit hydrogen and is therefore equivalent to “C[IH](C)(C)C”.  These two cases show that a single “model” or function can’t be used to process both SMILES and MDL mol files; much like aromaticity models, the definitions need to be matched to vendor file format.

Myth #2: Valence models follow simple patterns.

Dmitri Mendeleev made the whole problem of chemistry look easy by showing that elements could be conveniently arranged in a periodic table, to help predict their properties.  But such patterns can be deceptive.  If one observes that oxygen which typically has valence two in its neutral form, becomes three valent as a cation (+1 formal charge) and single valent as an anion (-1 formal charge), and that nitrogen which is typically three-valent when neutral, becomes four valent as a cation and two valent as an anion, one could jump to an obvious rule:  That cations have a valence one higher than the neutral form, and anions have a valence one less. Extrapolating this pattern would predict that a carbon anion would be three valent (which is correct), and that a carbon cation would be five valent (which is incorrect).

The truth is actually much closer to Mendeleev’s view of the periodic table.  The cation of an element (with one less electron) is isoelectronic to (and therefore tends to behave like) the element to its left in the periodic table, and the anion (with one more electron) is isoelectronic to the element to its right.  This predicts that N+ has the same valence as neutral carbon, and N has the same valence as neutral oxygen.  More importantly it reveals that C behaves like nitrogen (three valent) and that C+ behaves like boron (also three valent).

Alas, in the real world of cheminformatics life is much more complicated, with the MDL valence model defining different valences even for isoelectronic element/charge states.  Neutral thallium and lead(+1) would be expected to have the same set of valences, but the former is 1 and 3 valent, with the latter only 3 valent. The best that can be done is to explicitly encode complex valence models, such as MDL’s as large tables and enumerate the applicable cases.

The ultimate arbiter of a valence model is the author of a file format; hence Daylight define (and document) the valence model for SMILES, MDL/Symyx/Accelrys define the valence model for Mol files, CambridgeSoft/PKI define the valence model for ChemDraw files, and Tripos define the valence model for Sybyl Mol2 files.  An easy way to determine the “correct” MDL/Symyx valence for an atom is to draw the element and formal charge in ISIS/Draw, Symyx/Draw or Accelrys/Draw, and select “AutoPosition Hydrogens”.

Myth #3: A connection table representing a molecule is interpreted the same way by all programs.

Whilst most cheminformatics software tends to agree on the valences of common elements and charge states, such as neutral carbon and quaternary ammoniums, they start to rapidly diverge the further one goes from core organic chemistry.  Consider a boron atom with a -4 formal charge, which according to the MDL/Symyx valence model should be interpreted as being single valent.  At the end of 2012, OpenEye’s OEChem treated B4- as zero valent,  OpenBabel treated it as three valent and RDKit treated it as seven valent.  The same connection table results in four different molecular formulae in four different programs.

To assess the level of consistency in the cheminformatics community when interpreting connection tables, I performed a simple experiment and presented the results of a small “mdlbench” benchmark at the 2012 RDKit User Group Meeting in London. Firstly many thanks to Greg Landrum for allowing me to present, and the numerous toolkit developers who generous assisted by benchmarking and tweaking their software.  The evaluation considered the 199 unique atom types observed in Accerlys’s MDDR database of drug and drug-like molecules, and compared their interpretation across no less than 24 different chemistry toolkits/programs (mdlbench.sdf and mdlbench.smi).  The diversity of results was a surprise even to me, and some of the numbers were a shock; I certainly wasn’t expecting the toolkit graciously hosting the meeting, RDKit, to appear at the bottom of the list.  [No longer the case, read on…]

To demonstrate examples of differences: Bi2+ with a single single bond, occurs 7266 times in MDDR 2011.2, and is defined by MDL/Symyx to be three valent, and therefore have two implicit hydrogens.  ChemDraw, Corina, Pipeline Pilot and Dotmatics Pinpoint all add no implicit hydrogens, whilst ChemAxon and RDKit add four instead of two.  B2- with a single single bond, occurs 370 times and and again should be three valent, with two implicit hydrogens.  GGA Indigo adds no implicit hydrogens, whereas Daylight, RDKit, ChemAxon and Pipeline Pilot v8.5 all add four implicit hydrogens.  Interestingly, this case has been fixed in the upcoming Pipeline Pilot v9, a dividend to the community of Accelrys acquiring Symyx.

Myth #4: Everything is broken in cheminformatics and nothing can be done to fix it.

Actually things aren’t as bad as they seem – the mdlbench analysis revealed that the vast majority of molecules are unaffected by differences between toolkits – but most importantly the exercise revealed the large degree of co-operation between developers in improving interoperability between tools.  Most significantly both Open Babel and RDKit open source projects have since accepted patches (Open Babel mdlvalence.h, RDKit MDLValence.h) to fully implement the MDL valence model and now achieve a perfect 100% on this benchmark.  Commercial developers at InfoChem and Optibrium have made improvements to their MDL file readers, as has the MayaChem tools project, and copies of the “mdlbench” test have even been requested by pharmaceutical companies to validate their in-house tool development efforts.  The great news for the community is that there is now less “corruption” of chemistry when sharing data between software, so the molecules read from PubChem or ChEMBL into your analysis programs or editors are more likely to match the molecules that the NCBI or EBI intended them to be.

On the other hand

Mirror imageThe vast majority of amino acid residues that appear in peptides and proteins appear as their natural L-form enantiomer. This is the form of all amino acids as translated by the ribosome. However post-translational modification, such as by racemases, or peptide synthetic methods can be used to introduce the mirror image D-forms of amino acids into peptidic compounds.

Though rare, it is often important to keep track of whether individual amino acids are L-form, D-form, unknown or a racemic mixture of the two (DL-form). Rather unhelpfully, IUPAC rule 3AA-3.3 from IUPAC’s “Nomenclature and Symbolism for amino acids and peptides” states that the configuration prefix may be omitted for amino acids from a natural protein source (where the configuration may be assumed to be L) and for amino acids from synthetic sources (where the configuration is assumed to be an equimolecular mixture of enantiomers).

In the RCSB’s PDB file format, three letter residue codes have been assigned for both the L- form and the D- form of the traditional 19 amino acids other than glycine. Glycine (PDB residue code GLY) has an achiral α-carbon and therefore does not have an L-form and a D-form. For convenience, the table below lists the correspondence between PDB’s three letter codes for these amino acids.

Name L-form D-form
Alanine ALA DAL
Arginine ARG DAR
Asparagine ASN DSG
Aspartic Acid ASP DAS
Cysteine CYS DCY
Glutamine GLN DGN
Glutamic Acid GLU DGL
Histidine HIS DHI
Isoleucine ILE DIL
Leucine LEU DLE
Lysine LYS DLY
Methionine MET MED
Phenylalanine PHE DPN
Proline PRO DPR
Serine SER DSN
Threonine THR DTH
Tryptophan TRP DTR
Tyrosine TYR DTY
Valine VAL DVA

The above table is believed to be the only internet resource conveniently linking the two PDB residue codes for enantiomeric forms of amino acids.

Unfortunately for the two recent natural amino acids, selenocysteine (PDB residue code CSE) and pyrrolysine (PDB residue code PYH), no PDB residue codes have yet been assigned for their enantiomeric D-forms.

Image credit: The Joneses (where are the joneses on Flickr)

Text Mining for a Worthy Cause

I recently received an e-mail from the charity “jeans for genes” introducing me to “black bone disease“, a rare genetic disease without a cure. It is more formally known as “Alkaptonuria” (OMIM entry) and is a defect in the homogentisate 1,2-dioxygenase gene (HGD) which leads to a toxic build-up of homogentisic acid in the blood, causing the symptoms of the disease.

Interestingly a re-purposed herbicide, nitisinone, is currently being investigated as a possible treatment for the disease based on its previous re-purposing as a therapy in related genetic disorder, Type 1 Tyrosinemia.

The story starts in 1977 when a researcher in California observed that relatively few weeds were growing under the bottlebrush (Callistemon) plants in his backyard. Analytical chemistry of the soil fractions revealed the active compound to be the natural product Leptospermone. Traditional ligand based optimization of this compound led to the effective herbicides mesotrione (Syngenta’s Callisto) and nitisinone being synthesized and tested in 1984, with the first patents on this class of herbicides appearing in 1986 (e.g. US 4780127). At the point these patents were filed/granted, the mechanism of action and protein target weren’t yet known, although they were experimentally proven to be toxic to plants but harmless to mammals. Much later it was discovered that these compounds worked by inhibiting the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD) which blocks the synthesis of chlorophyll and leads to “bleaching” and eventual plant death.

It is the role that HPPD plays in human metabolism that make these herbicides so interesting as therapeutic agents. The pathway diagram below describes the five enzymatic steps (arrows) in the degradation metabolism of tyrosine.

Defects in these various enzymes responsible for each step lead to a number of related diseases: Problems with the first step, tyrosine-transaminase, cause type 2 tyrosinemia; the second step, p-Hydroxylphenylpyruvate-dioxygenase (HPPD) is our herbicide target for which defects cause type 3 tyrosinemia; step three, homogentisate dioxygenase (HGD) causes alkaptonuria (aka black bone disease); and step 5, 4-fumaryl-acetoacetate hydrolase causes type 1 tyrosinemia.

In the case of type 1 tyrosinemia, it was noticed that those patients with active HPPD had a more severe form of the disease, so it was hypothesized that a HPPD inhibitor may be beneficial. At the time Zeneca worked on both pharmaceuticals and crop protection and were able to evaluate their proven-safe herbicide nitisinone directly in the clinic. In what seems incredible by the standards of today’s pharmaceutical pipelines, their US 5550165 patent filing describes the administration to, and recovery of, sick infants and children, where it is now more usual for a drug candidate to spend years in phase I, II and III clinical trials after a patent is granted before it gets approved by the FDA.

HPPD inhibitors can be anticipated to treat alkaptonuria by much the same mechanism:
By blocking the formation of the toxic metabolite homogentisate, and causing tyrosine
to be metabolised via alternate routes.

One of the goals of modern text mining is to automatically discover links such as those between the above two patents, US4780127 and US5550165. Unfortunately, a range of technical issues complicate the process: In common with many pharmaceutical patent filings, the drug target is not known or not mentioned, so it is necessary to identify and annotate compound classes or modes of action such as “kinase inhibitor”, “beta-blocker”, “herbicide” or “antibiotic”. The large number of synonyms and typographical variants of enzyme and disease names requires the use of synonym dictionaries or ontologies to recognize that “tyrosine transaminase” is the same entity as “tyrosine aminotransferase” is the same as “EC 2.6.1.5“. Finally, as revealed by the mistake “tyosinemia” in the title of the above US 5550165, documents in real life frequently contain spelling errors, making it impossible to find the most relevant documents when searching for a keyword like “tyrosinemia” (without automatic spelling correction).

These are exactly the types of challenges our LeadMine software attempts to tackle.

Molecular Half-life: The light that burns twice as bright burns for half as long

Trinity 007In a previous post I described how to use cheminformatics to determine whether or not a compound was radioactive by checking for unstable atomic nuclei.  Alas, such a binary yes-or-no classification is a clumsy tool for eliminating dubious structures, or even identifying non-drugs in chemical databases.  For example, bismuth is unfortunate enough to have no perfectly stable isotopes, making drugs such as GSK’s Pylorid (ranitidine bismuth citrate) technically but negligibly radioactive, even though bismuth’s half-life is 1.9×1019 years, or over a billion times the life of the universe.  Likewise, although [7H] has been observed experimentally, its half-life of 23 yoctoseconds (1×10-24 seconds) makes it use impractical for traditional drug discovery.

As an interesting aside, measurements of half-lives form an interesting exception to usual SI units, with small values being in fractions of a second (milliseconds, microseconds, nanoseconds), intermediates values being in minutes, hours and days, and large values being in multiples of years (kiloyears, megayears, gigayears and so on).  Converting units to normalized form, for example times in terms of seconds, is all part of scientific computing.

To refine the filtering of plausible/reasonable neutron counts we propose the use of molecular half-life, rather than binary categories such radioactive vs. stable or experimentally observed vs. purely hypothetical.  The one subtlety with this definition is that a molecule’s half-life is determined from the half-lives of all of the unstable atoms it contains.  As hinted in the title, a molecule with two copies of the same unstable nuclide, has a half-life half that of an individual atom.  In general, the formula for a molecule’s half-life is 1/Σi{1/t½(i)}, or the reciprocal of sum of the reciprocals of constituent atomic half-lives.

At NextMove Software, we currently use the nuclide half-lives tabulated by the Nubase2003 database (downloadable as an ASCII file). The resulting “half-life validity” check can be used to identify dubious structures in chemical databases using a suitable threshold. For example, the most suspicious isotopic specification in NCBI’s PubChem database belongs to CID 11635947. This is a structure deposited by NextBio that contains an erroneous [8C]. Although [8C] has been experimentally observed (and PubChem should be congratulated for containing no nuclides that haven’t been observed), it has an impressively low half-life of only two zeptoseconds (2×10-19 seconds).

A more reasonable threshold might be around the 1223 second (~20 minute) half-life of [11C], which legitimately appears as the least stable compound in Accelrys’ MDDR database. 11C is used as a radiotracer in Positron Emission Tomography (PET), where compounds have to be used within about three half-lives of their manufacture. When filtering compound screening collections, threshold half-lives much higher might be reasonable.

My final observation is that even more accurate calculations of molecular half-life is possible by taking into account the influence of chemical environment on atomic half-life.
For example, metallic Berylium-7, [7Be], has a different half-live to covalently bound Berylium-7, such as in Berylium-7 fluoride, F[7Be]F, or Berylium-7 oxide, [7Be]=O, and fully ionizied Rhenium-187, [187Re+75] has a half-life of 33 years, significantly lower than that of metallic Rhenium-187, [187Re], which has a half-life of 41 gigayears (41×109 years).

Image credit: Ed Siasoco (aka SC Fiasco) on Flickr

Radioactivity — It’s in the air for you and me

Radioactive Materials AreaRadioactivity, discovered by Madame Curie, is the process by which the nucleus of an “unstable” atom decays to a different form.  As mentioned in a previous blog post, atoms are composed of protons, neutrons and electrons; protons are easy to handle in cheminformatics, electrons are incredibly difficult and here we discuss the neutrons.

Checking whether the number of neutrons specified with an atom (the isotope) is plausible and reasonable is a non-trivial challenge.  At the most simplistic level, many cheminformatics applications and file formats ignore isotopes altogether and assume every atom has the default terrestrial isotopic composition/abundance as prescribed/recommended by IUPAC. The next level of sophistication is to treat the atomic symbols “D” and “T” as corresponding to deuterium, [2H], and tritium, [3H] respectively.

More usually, such as with MDL’s SD files or SMILES, allow the optional specification of a mass number (number of nucleons, i.e. protons+neutrons, in the nucleus).  If not specified, the element again has the IUPAC recommended composition.  A common misunderstanding with these semantics is that [12C] is not the same as [C].  Although terrestrial carbon is predominantly carbon-12 (98.89% by the latest 2009 recommendations) the presence of trace amounts of [13C] keep these distinct.  Having said that, 22 elements do have a unique isotope officially used to determine their atomic weight and hence [4Be], [9F], [11Na], [13Al], [15P], [21Sc], [25Mn], [27Co], [33As], [39Y], [41Nb], [45Rh], [53I], [55Cs], [59Pr], [65Tb], [67Ho], [69Tm], [79Au], [83Bi], [90Th] and [91Pa] may legitimately be canonicalised without the isotopic specification, i.e. [Be], F, [Na] and so on.

The most advanced cheminformatics file formats, such as Perkin Elmer Informatics’ (formerly CambridgeSoft’s) ChemDraw CDX and CDXML file format can even specify enrichment and depletion in specific isotopes. 

Unfortunately, having a specified isotope is often confused with being radioactive.  For example, RSC’s ChemSpider abuses the international icon for radioactivity to actually mean “Non-standard isotope”, though this is clearly stated.  This is because testing for a specified mass number is relatively easy, with many toolkits supporting the SMARTS semantics that [!0*] matches any specified isotope.  Although this is useful for identifying compounds whose isotopes need to be checked, it doesn’t correspond to radioactivity.  For example, deuterium, [2H] has a specified isotope but isn’t radioactive, whilst uranium, [U], even without a specified isotope is radioactive.

To address this I’ll describe how to ascertain whether a compound is radioactive, a useful descriptor especially when dealing with the “Health & Safety” parts of a pharmaceutical company.  A molecule is radioactive if any of its atoms is radioactive, and an atom is radioactive if it isn’t stable.  If an isotope isn’t specified, the element must have at least one stable isotope to be considered stable (these are the elements from hydrogen, [#1], to lead, [#82], with the exceptions of technetium [#43] and prometium [#61]), otherwise the specified isotope must correspond to one of the 255 known stable nuclides.  Hence, SMARTS pattern is_stable corresponds to [0#1,1#1,2#1,0#2,3#2,4#2,...].  Using De Morgan’s laws this atom expression can be negated to produce is_radioactive as [!0,!#1;!1,!#1;!2,!#2;…].

The complete SMARTS pattern for is_radioactive is shown below:

[!0,!#1;!1,!#1;!2,!#1;!0,!#2;!3,!#2;!4,!#2;!0,!#3;!6,!#3;!7,!#3;!0,!#4;!9,!#4;!0,!#5;!10,!#5;!11,!#5;!0,!#6;!12,!#6;!13,!#6;!0,!#7;!14,!
#7;!15,!#7;!0,!#8;!16,!#8;!17,!#8;!18,!#8;!0,!#9;!19,!#9;!0,!#10;!20,!#10;!21,!#10;!22,!#10;!0,!#11;!23,!#11;!0,!#12;!24,!#12;!25,!
#12;!26,!#12;!0,!#13;!27,!#13;!0,!#14;!28,!#14;!29,!#14;!30,!#14;!0,!#15;!31,!#15;!0,!#16;!32,!#16;!33,!#16;!34,!#16;!36,!#16;!0,
!#17;!35,!#17;!37,!#17;!0,!#18;!36,!#18;!38,!#18;!40,!#18;!0,!#19;!39,!#19;!41,!#19;!0,!#20;!40,!#20;!42,!#20;!43,!#20;!44,!#20;
!46,!#20;!0,!#21;!47,!#21;!0,!#22;!46,!#22;!47,!#22;!48,!#22;!49,!#22;!50,!#22;!0,!#23;!51,!#23;!0,!#24;!50,!#24;!52,!#24;!53,!#
24;!54,!#24;!0,!#25;!55,!#25;!0,!#26;!54,!#26;!56,!#26;!57,!#26;!58,!#26;!0,!#27;!59,!#27;!0,!#28;!58,!#28;!60,!#28;!61,!#28;!62,
!#28;!64,!#28;!0,!#29;!63,!#29;!65,!#29;!0,!#30;!64,!#30;!66,!#30;!67,!#30;!68,!#30;!70,!#30;!0,!#31;!69,!#31;!71,!#31;!0,!#32;!
70,!#32;!72,!#32;!73,!#32;!74,!#32;!0,!#33;!75,!#33;!0,!#34;!74,!#34;!76,!#34;!77,!#34;!78,!#34;!80,!#34;!0,!#35;!79,!#35;!81,!#
35;!0,!#36;!79,!#36;!80,!#36;!82,!#36;!83,!#36;!84,!#36;!86,!#36;!0,!#37;!85,!#37;!0,!#38;!84,!#38;!86,!#38;!87,!#38;!88,!#38;!0,
!#39;!89,!#39;!0,!#40;!90,!#40;!91,!#40;!92,!#40;!94,!#40;!96,!#40;!0,!#41;!93,!#41;!0,!#42;!92,!#42;!94,!#42;!95,!#42;!96,!#42;
!97,!#42;!98,!#42;!0,!#44;!96,!#44;!98,!#44;!99,!#44;!100,!#44;!101,!#44;!102,!#44;!104,!#44;!0,!#45;!103,!#45;!0,!#46;!102,!#4
6;!104,!#46;!105,!#46;!106,!#46;!108,!#46;!110,!#46;!0,!#47;!107,!#47;!109,!#47;!0,!#48;!106,!#48;!108,!#48;!110,!#48;!111,!#
48;!112,!#48;!114,!#48;!0,!#49;!113,!#49;!0,!#50;!112,!#50;!114,!#50;!115,!#50;!116,!#50;!117,!#50;!118,!#50;!119,!#50;!120,!
#50;!122,!#50;!124,!#50;!0,!#51;!121,!#51;!123,!#51;!0,!#52;!120,!#52;!122,!#52;!123,!#52;!124,!#52;!125,!#52;!126,!#52;!0,!#5
3;!127,!#53;!0,!#54;!124,!#54;!126,!#54;!128,!#54;!129,!#54;!130,!#54;!131,!#54;!132,!#54;!134,!#54;!136,!#54;!0,!#55;!133,!#
55;!0,!#56;!130,!#56;!132,!#56;!134,!#56;!135,!#56;!136,!#56;!137,!#56;!138,!#56;!0,!#57;!139,!#57;!0,!#58;!136,!#58;!138,!#5
8;!140,!#58;!142,!#58;!0,!#59;!141,!#59;!0,!#60;!142,!#60;!143,!#60;!145,!#60;!146,!#60;!148,!#60;!0,!#62;!144,!#62;!149,!#62;
!150,!#62;!152,!#62;!154,!#62;!0,!#63;!153,!#63;!0,!#64;!154,!#64;!155,!#64;!156,!#64;!157,!#64;!158,!#64;!160,!#64;!0,!#65;!1
59,!#65;!0,!#66;!156,!#66;!158,!#66;!160,!#66;!161,!#66;!162,!#66;!163,!#66;!164,!#66;!0,!#67;!165,!#67;!0,!#68;!162,!#68;!16
4,!#68;!166,!#68;!167,!#68;!168,!#68;!170,!#68;!0,!#69;!169,!#69;!0,!#70;!168,!#70;!170,!#70;!171,!#70;!172,!#70;!173,!#70;!1
74,!#70;!176,!#70;!0,!#71;!175,!#71;!0,!#72;!176,!#72;!177,!#72;!178,!#72;!179,!#72;!180,!#72;!0,!#73;!180,!#73;!181,!#73;!0,!
#74;!182,!#74;!183,!#74;!184,!#74;!186,!#74;!0,!#75;!185,!#75;!0,!#76;!184,!#76;!187,!#76;!188,!#76;!189,!#76;!190,!#76;!192,
!#76;!0,!#77;!191,!#77;!193,!#77;!0,!#78;!192,!#78;!194,!#78;!195,!#78;!196,!#78;!198,!#78;!0,!#79;!197,!#79;!0,!#80;!196,!#80
;!198,!#80;!199,!#80;!200,!#80;!201,!#80;!202,!#80;!204,!#80;!0,!#81;!203,!#81;!205,!#81;!0,!#82;!204,!#82;!206,!#82;!207,!#8
2;!208,!#82]

Image credit: LimeTech on Flickr

Ye cannae change the laws of physics

Montgomery "Scotty" ScottOne of the problems with curating chemical databases of small organic molecules is filtering out bogus connection tables from legitimate molecules. One aspect of this challenge has been termed [Ed: “I” have termed] EOCWR standing for “Explodes On Contact With Reality”.

An interesting class of broken molecules, that are often overlooked by reasonableness filters, are those that defy the standard model of physics. In this view of matter, atoms are composed of whole numbers of protons, neutrons and electrons. To paraphrase, Democritus “all that exists are groupings of protons, neutrons and electrons in empty space, all else is opinion”. Naturally, under this model the formal charge on an atom cannot exceed its atomic number. Whilst [Ed: “While”] an arbitrary number of electrons may be associated with an atom, it cannot have fewer electrons than zero; hence the positive charge is bounded by the number of protons in the nucleus. However, many cheminformatics file formats record the formal charge rather than the electron count leading to the ability to represent impossible molecules. Checking for these is relatively trivial and allows compounds such as [H+2] or [C+7] to be flagged as erroneous.

Another example of testing for EOCWR is the work of Dr Jonathan Goodman and colleagues at the University of Cambridge on the challenges on embedding alkanes in three dimensions (here and here). Their work explains that in some molecules, although all atomic valences are reasonable, steric crowding would produce sufficient strain that the molecule would fall apart. Hence although graph theoretically an sp3 carbon may have four neighbours that each itself has three additional neighbours (all unique) in reality there is an energetic upper bound of 10 second neighbours in alkanes. As above, checking the number of second (and third) neighbours of an atom provides a convenient and efficient way of distinguishing plausible molecules from the artifacts of erroneous molecule processing (termed “robochemistry” by NCBI PubChem’s Evan Bolton).

Image credit: Graham Lees (Tram Painter on Flickr)

Lazy File Reading with mmap

Will Fix Defects For CaffeineThe example source code often provided with cheminformatics libraries to demonstrate the available functionality often try to address two conflicting requirements. On the one hand, these attempt to be pedagogical teaching examples, explaining how to perform a task often to a new or inexperienced user. On the other, these also attempt to address realistic problems and have utility in their own right. Alas in some cases, the best or most efficient way to do something is not the easiest to understand, so efficiency is sacrificed for clarity, or the other way around.

A recent example of this dilema arose for an example program to demonstrate how NextMove Software’s CaffeineFix library can be used with jQuery to provide efficient autocompletion/suggestion in chemical search engine text boxes, such as provided by Google. A minor implementation detail of this approach was the reading of CaffeineFix’s binary .cfx file format from disk.

In C or C++, a simple way to perform this shown by LoadDictionary1 below, that uses the standard I/O library to read in the dictionary in sequential chunks of 64 Kbytes at a time.

#include <stdlib.h>
#include <stdio.h>

unsigned char *LoadDictionary1(const char *fname) {
  unsigned int alloc = 65536
  unsigned char *result;
  unsigned int len = 0;

  FILE *fp = fopen(fname,"rb");
  if (!fp) {
    fprintf(stderr,"Error: Unable to read dictionary file %s\n",fname);
    return (unsigned char*)0;
  }

  result = (unsigned char*)malloc(65536);
  if (!result) {
    fprintf(stderr,"Error: Unable to allocate 64K buffer!\n");
    return (unsigned char*)0;
  }

  for(;;) {
    unsigned int chunk = fread(result+len,1,65536,fp);
    len += chunk;

    if (chunk != 65536) break;
    alloc += 65536;
    result = (unsigned char*)realloc(result,alloc);
    if (!result) {
      fprintf(stderr,"Error: Unable to reallocate %uK buffer!\n",alloc>>10);
      exit(1);
    }
  }
  fclose(fp);
  return result;
}

This is functional, highly portable between systems and even works with streams, such as stdin.

Ultimately, however, the most efficient implementation for reading binary CaffeineFix dictionaries on UNIX-like operating systems is to use “mmap“. Memory mapping lets the operating system decide where to return contents of a file, but with a clever trick of virtual memory that the data is (typically) only read from disk when a memory location is accessed.

#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/mman.h>
static unsigned char *LoadDictionary4(const char *fname)
{
  unsigned char *result;
  unsigned int len;
  struct stat buf;

  int fd = open(fname,O_RDONLY);
  if (fd < 0) {
    fprintf(stderr,"Error: Unable to read dictionary file %s\n",fname);
    return (unsigned char*)0;
  }

  if (fstat(fd,&buf) < 0) {
    fprintf(stderr,"Error: Unable to determine file size\n");
    return (unsigned char*)0;
  }

  len = (unsigned int)buf.st_size;
  result = (unsigned char*)mmap(0,len,PROT_READ,MAP_FILE|MAP_PRIVATE,fd,0);
  if (result == MAP_FAILED) fprintf(stderr,"Error: Unable to memory map dictionary!\n");
  return result;
}

For the example use-case described above, autocompletion using CaffeineFix typically only (randomly) accesses a small fraction of the binary file. In practice, this means that only a small part need be read from disk.

To quantify the performance advantage, we consider autocompleting the text “bisul” using NCBI pubchem’s synonym dictionary of 46.6 million compound names. The original 976 Mbyte ASCII dictionary file is very efficiently encoded as a 718 Mbyte binary CFX file. Using LoadDictionary1 above, autocompletion of “bisul” to return 10 possible completions takes 68 seconds on my Apple laptop, over 99.9% spent in file I/O. Using memory mapped file I/O with LoadDictionary4, the same task takes under half a second.

In practice, if using a persistent process on a web server there’s very little difference between approaches, as once the dictionary has been read into memory suggestions can be made as fast as a user types. However, for applications where this start-up time is an issue, memory mapping is clearly superior.

As a final word, I should point out that memory mapped file I/O is also available to programmers on Microsoft Windows using the MapViewOfFile APIs, and even to Java programmers using the FileChannel.map method to return a ByteBuffer. [Ed: It’s also available in the Python standard library!]

Image credit: James Nash (aka Cirrus) on Flickr