['O=[SH](=O)c1ccc(Cl)s1', 'Nc1ccc2c(c1)CCO2', 'c1ccc2c(c1)CCO2', 'NS(=O)(=O)c1ccc(Cl)s1']
The Murcko scaffold (minmal number of connected rings) of <smiles></smiles> is O=S(=O)(Nc1ccc2c(c1)CCO2)c1cccs1.