112820-37-8 Propanoyl fluoride, 2,3,3,3-tetrafluoro-2-(1,2,2-trifluoro-2-(heptafluoropropoxy)-1-(trifluoromethyl)ethoxy)- Propanoyl fluoride, 2-(1-(difluoro(heptafluoropropoxy)methyl)-1,2,2,2-tetrafluoroethoxy)-2,3,3,3-tetrafluoro-