Using C=CCCCCCC(Nc1cc(F)cc(C(F)(F)F)c1)C(=O)OC to produce C=CCCCCCC(Nc1cc(F)cc(C(F)(F)F)c1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.