Using NCc1ccc(F)cc1, Nc1cc(F)c(F)cc1[N+](=O)[O-] to produce Nc1cc(NCc2ccc(F)cc2)c(F)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.