Using O=C1O[C@H]([C@@H](O)CO)C([O-])=C1OS(=O)(=O)[O-] to produce O=C1O[C@H]([C@@H](O)CO)C(O)=C1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.