Using CC(=O)Oc1ccccc1C(=O)NC(Cl)C(Cl)(Cl)Cl, Sc1ccccc1 to produce O=C(NC(Sc1ccccc1)C(Cl)(Cl)Cl)c1ccccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.