Using CCOC(=O)[C@H](Cc1cccc(OC[C@H](O)COc2ccc(Cl)cc2Cl)c1)OC(C)C to produce CC(C)O[C@@H](Cc1cccc(OC[C@H](O)COc2ccc(Cl)cc2Cl)c1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.