Using CCOC(=O)C1(C(=O)OCC)CCCN(C(=O)OCc2ccccc2)C1Cc1ccc(OC)cc1 to produce CCOC(=O)C1(C(=O)O)CCCN(C(=O)OCc2ccccc2)C1Cc1ccc(OC)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.