Using CN(C)[C@H]1CC(=O)N(c2nn(C)cc2[N+](=O)[O-])C1 to produce CN(C)[C@H]1CC(=O)N(c2nn(C)cc2N)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.