Using COC(=O)CC[C@@H](CF)NC(=O)COc1ccc(Cl)cc1Cl to produce O=C(O)CC[C@@H](CF)NC(=O)COc1ccc(Cl)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.