Using CC(C)(C)OC(=O)[C@@H]1CC[C@@H](CC(C#N)NCc2ccccc2)N1C(=O)OC(C)(C)C, O=C([O-])[O-] to produce CC(C)(C)OC(=O)[C@@H]1CC[C@@H](CC(NCc2ccccc2)C(N)=O)N1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.