Using C[C@@H](Cn1ncc2ccc3oc(C(N)=O)nc3c21)N=[N+]=[N-] to produce C[C@H](N)Cn1ncc2ccc3oc(C(N)=O)nc3c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.