Using CC1(C)[C@H]2[C@H](C(Cl)(Cl)Cl)OC(=O)[C@H]21 to produce CC1(C)[C@@H]2[C@H]1[C@@H](O)O[C@H]2C(Cl)(Cl)Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.