Using CC(C)(C)OC(=O)N1C(C)(C)OC[C@@]1(C)C#N, [N-]=[N+]=[N-] to produce CC(C)(C)OC(=O)N1C(C)(C)OC[C@@]1(C)c1nn[nH]n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.