Using COC(=O)c1ccc(C(O)C(Cc2cccc(OC(F)(F)C(F)F)c2)C(=O)OCc2ccccc2)cc1 to produce COC(=O)c1ccc(C(O)C(Cc2cccc(OC(F)(F)C(F)F)c2)C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.