Using [N-]=[N+]=[N-], CC1(C)CCC(C)(C)c2cc(CCl)ccc21 to produce CC1(C)CCC(C)(C)c2cc(CN=[N+]=[N-])ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.