Using COC(=O)c1ccccc1COc1ccc(CCOc2ccc(OS(C)(=O)=O)cc2)cc1 to produce CS(=O)(=O)Oc1ccc(OCCc2ccc(OCc3ccccc3C(=O)O)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.