['CC', 'Cc1ccc(S(=O)(=O)NC(C)CO)cc1', 'CCO', 'Cc1ccc(S(=O)(=O)NC(C)C)cc1', 'CCCOCC', 'Cc1ccc(S(N)(=O)=O)cc1', 'CCOCC(C)N', 'Cc1ccc([SH](=O)=O)cc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.