Using CNc1nc(OCC(F)F)c(C(=O)Nc2ccc(Br)cc2)cc1[N+](=O)[O-] to produce CNc1nc(OCC(F)F)c(C(=O)Nc2ccc(Br)cc2)cc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.