['CC(C=O)NS(C)(=O)=O', 'Cc1ccc2nc(CN)cn2c1', 'CC(NS(C)(=O)=O)C(N)=O', 'Cc1ccc2nc(C)cn2c1', 'CS(N)(=O)=O', 'CCC(=O)NCc1cn2cc(C)ccc2n1', 'C[SH](=O)=O', 'Cc1ccc2nc(CNC(=O)C(C)N)cn2c1', 'Cc1ccc2nccn2c1', 'CNC(=O)C(C)NS(C)(=O)=O']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccn2ccnc2c1.