Using O=C1[N-]C(=O)c2ccccc21, O=[N+]([O-])c1cc(Br)ccc1F to produce O=C1c2ccccc2C(=O)N1c1ccc(Br)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.