['CC', 'Cc1ccc(Br)cc1S(=O)(=O)NC(C)CO', 'CCO', 'Cc1ccc(Br)cc1S(=O)(=O)NC(C)C', 'CCCOCC', 'Cc1ccc(Br)cc1S(N)(=O)=O', 'CCOCC(C)N', 'Cc1ccc(Br)cc1[SH](=O)=O']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.