Using O=S([O-])O, CCC1CCSc2c(C)cc(C(C)=O)c(C)c21 to produce CCC1CCS(=O)(=O)c2c(C)cc(C(C)=O)c(C)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.