Using NN1CCc2cc(/C=C/C(c3cc(Cl)c(F)c(Cl)c3)C(F)(F)F)ccc21, O=C(O)CC(F)(F)F to produce O=C(CC(F)(F)F)NN1CCc2cc(/C=C/C(c3cc(Cl)c(F)c(Cl)c3)C(F)(F)F)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.