['CCCNS(C)(=O)=O', 'CNCc1csc2ccccc12', 'CS(N)(=O)=O', 'CCCN(C)Cc1csc2ccccc12', 'Cc1csc2ccccc12', 'CNCCCNS(C)(=O)=O', 'C[SH](=O)=O', 'CN(CCCN)Cc1csc2ccccc12', 'c1ccc2sccc2c1', 'CN(C)CCCNS(C)(=O)=O']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is c1ccc2sccc2c1.