Using CC12CCC(C(=O)Nc3ccc(CC#N)cc3)(OC1=O)C2(C)C, [N-]=[N+]=[N-] to produce CC12CCC(C(=O)Nc3ccc(Cc4nnn[nH]4)cc3)(OC1=O)C2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.