Using CS(=O)(=O)[O-], COCOc1cc(CO)cc(OCOC)c1CC=C(C)C to produce COCOc1cc(COS(C)(=O)=O)cc(OCOC)c1CC=C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.