fragments: ['CC(C)[C@](C)(N)C#N', 'C[C@H](C=O)Sc1ncc2ccccn12', 'CC(C)[C@H](C)C#N', 'C[C@@H](Sc1ncc2ccccn12)C(N)=O', 'Sc1ncc2ccccn12', 'CCC(=O)N[C@](C)(C#N)C(C)C', 'c1ccn2cncc2c1', 'CC(C)[C@@](C)(C#N)NC(=O)[C@@H](C)S']