Using O=S([O-])O, CC(=O)c1cc2c(cc1C)C(C)(C)CCC2(C)C to produce Cc1cc2c(cc1C(=O)O)C(C)(C)CCC2(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.