Using COc1cc(C#N)cc([N+](=O)[O-])c1OC, [N-]=[N+]=[N-] to produce COc1cc(-c2nnn[nH]2)cc([N+](=O)[O-])c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.