Using CCOC(=O)Cc1csc2cc(OCc3ccc(Cl)cc3Cl)ccc12, O=S([O-])[O-] to produce CCOC(=O)CC1=CS(=O)(=O)c2cc(OCc3ccc(Cl)cc3Cl)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.