Using COC(=O)c1ccccc1Sc1cc(Cl)ccc1C(=O)OC, O=C(OO)c1cccc(Cl)c1 to produce O=C(O)c1ccccc1S(=O)c1cc(Cl)ccc1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.