Using CI, COc1ccccc1SC[C@@H](O)COC(c1ccccc1)(c1ccccc1)c1ccccc1 to produce COc1ccccc1SC[C@H](COC(c1ccccc1)(c1ccccc1)c1ccccc1)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.