thioacetic acid S-{2-[2-(2-{2-[3-(2,2,2-trifluoro-1,1-bis-trifluoromethyl-ethoxy)-2,2-bis-(2,2,2-trifluoro-1,1-bis-trifluoromethyl-ethoxymethyl)-propoxy]-ethoxy}-ethoxy)-ethoxy]-ethyl} ester