['CC(C)(C)NCC=O', 'CC(N)c1ccc(S(C)(=O)=O)cc1', 'CC(C)(C)NCC(N)=O', 'CCc1ccc(S(C)(=O)=O)cc1', 'CC(C)(C)N', 'CC(=O)NC(C)c1ccc(S(C)(=O)=O)cc1', 'CC(C)C', 'CC(NC(=O)CN)c1ccc(S(C)(=O)=O)cc1', 'CS(=O)(=O)c1ccccc1', 'CCNC(=O)CNC(C)(C)C']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.