Using Nc1ccc(-c2nnc(Nc3cccc(Cl)c3)o2)cc1[N+](=O)[O-] to produce Nc1ccc(-c2nnc(Nc3cccc(Cl)c3)o2)cc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.