Using COC(=O)[C@@]12CO[C@@H](C(C)(C)C)N1C(=O)[C@](Cc1ccccc1)(C(=O)OCc1ccccc1)C2 to produce COC(=O)[C@@]12CO[C@@H](C(C)(C)C)N1C(=O)[C@](Cc1ccccc1)(C(=O)O)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.