3-[2-(2,4-dimethylthiophen-3-yl)-3,3,4,4,5,5-hexafluorocyclopenten-1-yl]-2,4-dimethylthiophene

1,2,2,3,3,4,4,5-octafluoro-6-oxabicyclo[3.1.0]hexane

pentafluoro((perfluorocyclopentyl)oxy)-l⁶-selane

1,1,2,2,3,3,4-heptafluoro-4-[3,3,4,4-tetrafluoro-2-(1,2,2,3,3,4,4-heptafluorocyclobutyl)cyclobuten-1-yl]cyclobutane

1,1,2,2,3,3,4-heptafluoro-4-(2,3,3,4,4-pentafluorocyclobuten-1-yl)cyclobutane