Using CC(=O)c1cc(C)c2c(c1C)C(=O)C(C)(C)CS2, O=S([O-])O to produce CC(=O)c1cc(C)c2c(c1C)C(=O)C(C)(C)CS2(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.