1H-Benzimidazole, 6-(2-chloro-4-pyrimidinyl)-4-fluoro-2-methyl-1-(1-methylethyl); 6-(2-Chloro-4-pyrimidinyl)-4-fluoro-2-methyl-1-(1-methylethyl)-1H-benzimidazole; 6-(2-Chloro-4-pyrimidinyl)-4-fluoro-2-methyl-1-(1-methylethyl)-1H-benzimidazole ; 6-(2-Chloropyrimidin-4-yl)-4-fluoro-1-isopropyl-2-methyl-1H-benzo[d]imidazole;