Using CS(=O)O, ClCc1nc2cc(Cl)c(Cl)cc2nc1Cl to produce CS(=O)(=O)Cc1nc2cc(Cl)c(Cl)cc2nc1S(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.