methyl 4-carboxy-6,6,7,7,8,8,8-heptafluoro-2,4-dimethyloct-2-enoate

methyl 4,4,5,5,6,6,6-heptafluoro-2-methylidenehexanoate

methyl 2-methyl-2-(heptafluoropropyl)-4,4,5,5,6,6,6-heptafluorohexanoate

trimethyl 1,1,1,2,2,3,3,10,10,11,11,12,12,12-tetradecafluoro-5,8-bis(2,2,3,3,4,4,4-heptafluorobutyl)-7-methyldodecane-5,7,8-tricarboxylate