1-(3-O-tert-butyldimethylsilyl-5-O-p-methoxytrityl-β-D-ribofuranosyl)-5,6-dichlorobenzimidazole 2'-<2-(4-nitrophenyl)ethyl triethylammonium phosphate>

1-(3-O-tert-butyldimethylsilyl-β-D-ribofuranosyl)-5,6-dichlorobenzimidazole 2'-<2,5-dichlorophenyl 2-(4-nitrophenyl)ethyl phosphate>

1-(3-O-tert-butyldimethylsilyl-5-O-p-methoxytrityl-β-D-ribofuranosyl)-5,6-dichlorobenzimidazole