['CCCS(=O)(=O)C(C)C=O', 'CC(C)N(C)S(=O)(=O)c1ccc(CN)cc1', 'CCCS(=O)(=O)C(C)C(N)=O', 'Cc1ccc(S(=O)(=O)N(C)C(C)C)cc1', 'CCC', 'CCCS(=O)(=O)C(C)C(=O)NCc1ccc(S(=O)(=O)NC)cc1', 'CNC(C)C', 'CCCS(=O)(=O)C(C)C(=O)NCc1ccc([SH](=O)=O)cc1', 'CCCS(=O)(=O)C(C)C(=O)NC', 'CC(C)N(C)S(=O)(=O)c1ccccc1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.