Using O=C(Cl)Oc1ccccc1, COc1cc(CC(=O)Oc2ccccc2)cc(OC)c1 to produce COc1cc(OC)cc(C(C(=O)Oc2ccccc2)C(=O)Oc2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.