Using CC(=O)Oc1ccccc1C(=O)NC(Oc1ccc2ccccc2c1)C(Cl)(Cl)Cl to produce O=C(NC(Oc1ccc2ccccc2c1)C(Cl)(Cl)Cl)c1ccccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.