Using CNc1cc(Sc2ccc(Cl)cc2Cn2cncn2)ccc1[N+](=O)[O-] to produce CNc1cc(Sc2ccc(Cl)cc2Cn2cncn2)ccc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.