Using CC1(C)OC[C@@H](COc2ccc(C(=O)OCc3ccccc3)cc2)O1 to produce CC1(C)OC[C@@H](COc2ccc(C(=O)O)cc2)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.