Using CC(C)(C)NC(=O)CN1C(=O)C(N=[N+]=[N-])CC(c2ccccc2)c2ccccc21 to produce CC(C)(C)NC(=O)CN1C(=O)C(N)CC(c2ccccc2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.