Using COc1ccc(C(=O)N2C(=O)Cc3cccc(CC(=O)OCc4ccccc4)c32)cc1 to produce COc1ccc(C(=O)N2C(=O)Cc3cccc(CC(=O)O)c32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.