Using CCC(=O)CC(=O)OC, O=C(CCl)c1ccc(C(F)(F)F)cc1 to produce CCc1oc(-c2ccc(C(F)(F)F)cc2)cc1C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.