5 6-difluorobenzoic 1 2 5 thiadiazole July 8, 2019 16 32 64 128 3- 5-(2-fluorophenyl)-1 2 4-oxadiazol-3-yl benzoic acid 5 6-difluoroisobenzofuran-1 3-dione 3 4-difluoro-2-((2-fluoro-4-iodophenyl)amino)benzoic acid