5-Chloro-6-(2,3-dichlorophenoxy)-1H-benzo[d]imidazole-2-thiol; 5-Chloro-6-(2,3-dichlorophenoxy)-1H-benzimidazole-2-thiol; 5-Chloro-6-(2,3-dichlorophenoxy)-1H-benzimidazole-2-thione