1,1,2,3,4,5,6,7-octafluoroindene

Hexafluorohomophthalic acid

1H-2-Benzopyran-1-one, 3,3,4,4,5,6,7,8-octafluoro-3,4-dihydro-

bis(perfluoroindan-2-yl) ether

perfluoro-2-(indan-2-yloxy)indan-1-one