Using [N-]=[N+]=[N-], CC(C)C(C(=O)OCc1ccccc1)c1ccc(N)cc1 to produce CC(C)C(C(=O)OCc1ccccc1)c1ccc(N=[N+]=[N-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.