pentadecafluoroheptane-1-sulphonyl fluoride 1,1,2, 2,3,3,4,4,5,5,6,6,7,7,7-pentadecafluoro-1-Heptanesulfonyl fluoride 1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-Pentadecafluoro-1-heptanesulfonyl fluoride 1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-pentadecafluoro-1-heptanesulfonyl fluorid 1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-Pentadecafluoro-1-heptanesulfonyl fluoride 1,1,2,2,3,3,4,4,5,5,6,6,7,7,7-pentadecafluoroheptane-1-sulfonyl fluoride Perfluoroheptanesulfonyl fluoride Pentadecafluoro-1-heptanesulfonyl fluoride Pentadecafluoroheptane-1-sulfonyl fluoride entadecafluoroheptane-1-sulphonyl fluoride