Using Fc1ccccc1F, O=C1C[C@H](NC(=O)C(F)(F)F)C(=O)O1 to produce O=C(C[C@H](NC(=O)C(F)(F)F)C(=O)O)c1ccc(F)c(F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.