['CC(C)N', 'O=CCNS(=O)(=O)c1cc(Cl)sc1Cl', 'CCC', 'NC(=O)CNS(=O)(=O)c1cc(Cl)sc1Cl', 'CC(=O)NC(C)C', 'NS(=O)(=O)c1cc(Cl)sc1Cl', 'CC(C)NC(=O)CN', 'O=[SH](=O)c1cc(Cl)sc1Cl']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccsc1.