1,3-Dioxolane,4-[4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-heptadecafluoro-1-(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)-1-methoxyundecyl]-2-[4-(trifluoromethyl)phenyl]-