Using CN(C(=O)c1ccc2nonc2c1)[C@H]1CC[C@H](N=[N+]=[N-])CC1 to produce CN(C(=O)c1ccc2nonc2c1)[C@H]1CC[C@H](N)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.