['CC', 'N#CCNS(=O)(=O)c1ccc(Br)cc1Cl', 'CC#N', 'CCNS(=O)(=O)c1ccc(Br)cc1Cl', 'CCNCC#N', 'O=[SH](=O)c1ccc(Br)cc1Cl']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.