Using Nc1cc(Oc2ccc(Cl)cc2Cn2cncn2)ccc1[N+](=O)[O-] to produce Nc1ccc(Oc2ccc(Cl)cc2Cn2cncn2)cc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.