4-(4-tert-butyl-2-ethoxyphenyl)-2-(2,6-difluorophenyl)-4,5-dihydro-1,3-oxazole, (RS)-5-tert-butyl-2-[2-(2,6-difluorophenyl)-4,5-dihydro-1,3-oxazol-4-yl]phenetole, 4-(4-(tert-Butyl)-2-ethoxyphenyl)-2-(2,6-difluorophenyl)-4,5-dihydrooxazole, 2-(2,6-difluorophenyl)-4-[4-(1,1-dimethylethyl)-2-ethoxyphenyl]-4,5-dihydrooxazole, rac-(4R)-2-(2,6-difluorophenyl)-4-(4-tert-butyl-2-ethoxyphenyl)-4,5-dihydro-1,3-oxazole,