Using CCOC(=O)CC(=O)[C@@H](NC(=O)OCc1ccccc1)C1CC1 to produce CCOC(=O)CC(O)[C@@H](NC(=O)OCc1ccccc1)C1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.