1-Hexanol,6,6'-[[2,2-bis[[2,3,5,6-tetrafluoro-4-[(2,2,3,3,4,4,5,5-octafluoro-6-hydroxyhexyl)oxy]phenoxy]methyl]-1,3-propanediyl]bis[oxy(2,3,5,6-tetrafluoro-4,1-phenylene)oxy]]bis[2,2,3,3,4,4,5,5-octafluoro-