Using CC1(C)CCc2nc(CCl)[nH]c(=O)c2C1, [N-]=[N+]=[N-] to produce CC1(C)CCc2nc(CN=[N+]=[N-])[nH]c(=O)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.