Using CC(C)CC1(C(N=[N+]=[N-])C(=O)OC(C)(C)C)CCN(CCc2ccccc2)C1=O to produce CC(C)CC1(C(N)C(=O)OC(C)(C)C)CCN(CCc2ccccc2)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.