Using CC(=C1C(=O)Nc2ccc(C#N)cc21)c1ccc[nH]1, [N-]=[N+]=[N-] to produce O=C1Nc2ccc(-c3nnn[nH]3)cc2C1=Cc1ccc[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.