Using CC(=O)Nc1cc(N)cc(-c2ccccc2)c1, O=[N+]([O-])c1cc(Br)ccc1F to produce CC(=O)Nc1cc(Nc2ccc(Br)cc2[N+](=O)[O-])cc(-c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.