Using O=C(Nc1ccn(-c2cccc(C(F)(F)F)c2)n1)c1cc(Cl)ccc1[N+](=O)[O-] to produce Nc1ccc(Cl)cc1C(=O)Nc1ccn(-c2cccc(C(F)(F)F)c2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.