Using COC(=O)[C@]1(O)C[C@H]2OC(C)(C)O[C@H]2[C@H](OS(C)(=O)=O)C1 to produce COC(=O)[C@]1(O)C[C@@H](O)[C@@H](O)[C@H](OS(C)(=O)=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.