6-(2-ISOBUTYRAMIDO-6-(4-NITROPHENETHOXY)-9H-PURIN-9-YL)-4-TRITYLMORPHOLIN-2-YL)METHYL DIMETHYLPHOSPHORAMIDOCHLORIDATE, ((2S,6R)-
6-(2-isobutyramido-6-(4-nitrophenethoxy)-9h-purin-9-yl)-4-tritylmorpholin-2-yl)methyl dimethylphosphoramidochloridate, ((2s,6r)-