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