Using O=S([O-])O, CCOC(=O)C(C)Oc1ccc(Sc2ccccc2C(F)(F)F)cc1 to produce CCOC(=O)C(C)Oc1ccc(S(=O)c2ccccc2C(F)(F)F)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.