Using O=S([O-])O, CC(=O)c1cc(C)c2c(c1Cl)C(C)(C)CCS2 to produce CC(=O)c1cc(C)c2c(c1Cl)C(C)(C)CCS2(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.