56523-43-4 7-Tetradecene 1,1,1,2,2,3,3,4,4,5,5,6,6,9,9,10,10,11,11,12,12,13,13,14,14,14-hexacosafluoro- Bis(perfluoro-n-hexyl)-1,2-ethylene Bis(perfluorohexyl)ethylene F-66E