Using CN1CCN(c2c(Cl)cc3c([nH]c4cnccc43)c2[N+](=O)[O-])CC1 to produce CN1CCN(c2c(Cl)cc3c([nH]c4cnccc43)c2N)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.