Using COC(=O)[C@@H]1C[C@@H](SC(C)=O)CN1S(=O)(=O)c1ccc2ccccc2c1 to produce O=C(O)[C@@H]1C[C@@H](S)CN1S(=O)(=O)c1ccc2ccccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.