Using CCOC(=O)C1(NC(=O)OC(C)(C)C)CC(OCc2ccccc2)C1 to produce CCOC(=O)C1(NC(=O)OC(C)(C)C)CC(O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.