Using CS(=O)([O-])=S, CC(=O)OCC1OC(Br)C(OC(C)=O)C(OC(C)=O)C1OC(C)=O to produce CC(=O)OC[C@H]1O[C@@H](OS(C)(=O)=S)[C@H](OC(C)=O)[C@@H](OC(C)=O)[C@H]1OC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.