Using CC(=O)O, COc1ccc(N(C)C(=O)[C@H](Cc2cccc(C#N)c2)NC(=O)OC(C)(C)C)cc1 to produce COc1ccc(N(C)C(=O)[C@H](Cc2cccc(C=O)c2)NC(=O)OC(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.