['CS(N)(=O)=O', 'CCCSc1ccc(C)cc1', 'CCCNS(C)(=O)=O', 'Cc1ccc(S)cc1', 'C[SH](=O)=O', 'Cc1ccc(SCCCN)cc1', 'Cc1ccccc1', 'CS(=O)(=O)NCCCS']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccccc1.