['CC(C)CNC=O', 'CNCc1ccc(SC)cc1', 'CC(C)CN', 'CSc1ccc(CN(C)C=O)cc1', 'CSc1ccc(C)cc1', 'CNC(=O)NCC(C)C', 'CC(C)C', 'CSc1ccc(CN(C)C(N)=O)cc1', 'CSc1ccccc1', 'CC(C)CNC(=O)N(C)C', 'CS', 'CC(C)CNC(=O)N(C)Cc1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.