Using COC(=O)CC(=O)OC, CC(C=CC(=O)Cl)Oc1ccc(Oc2ccc(Cl)cc2Cl)cc1 to produce COC(=O)C(C(=O)C=CC(C)Oc1ccc(Oc2ccc(Cl)cc2Cl)cc1)C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.