Using CCOC(=O)[C@@H]1C[C@H]1c1ccc(-c2cccc(C(F)(F)F)c2)nc1Cl to produce O=C(O)[C@@H]1C[C@H]1c1ccc(-c2cccc(C(F)(F)F)c2)nc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.