Using Nc1cc(Cl)c(Cl)cc1N, O=C(O)C(F)(F)C(F)(F)F to produce FC(F)(F)C(F)(F)c1nc2cc(Cl)c(Cl)cc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.