Using O=C(OCc1ccccc1)[C@H]1CS(=O)(=O)[C@@H]2CC(=O)N12 to produce O=C(O)[C@H]1CS(=O)(=O)[C@@H]2CC(=O)N12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.