Using Nc1ccc(Cl)c(Oc2cc(Cl)cc(Br)c2Cl)c1[N+](=O)[O-] to produce Nc1ccc(Cl)c(Oc2cc(Cl)cc(Br)c2Cl)c1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.