75042-07-8;AC1L4MBK;2,2,3,3,4,4,4-heptafluoro-N-[4-[4-(2,2,3,3,4,4,4-heptafluorobutanoylamino)phenyl]phenyl]butanamide;N,N'-biphenyl-4,4'-diylbis(2,2,3,3,4,4,4-heptafluorobutanamide)
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