Using CC(C)(C)O, O=C1C[C@@H](C(=O)O)[C@@H](C(=O)OCc2ccccc2)O1 to produce CC(C)(C)OC(=O)[C@H]1CC(=O)O[C@@H]1C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.