['CC(C)(C)NCC=O', 'COc1ccc2nc(N)sc2c1', 'CO', 'CC(C)(C)NCC(=O)Nc1nc2ccccc2s1', 'CC(C)(C)N', 'COc1ccc2nc(NC(C)=O)sc2c1', 'CC(C)C', 'COc1ccc2nc(NC(=O)CN)sc2c1', 'CC(C)(C)NCC(N)=O', 'COc1ccc2ncsc2c1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2scnc2c1.