((3aR,4R,6R,6aR)-6-(6-Amino-9H-purin-9-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methyl ((R)-2-((tert-butoxycarbonyl)amino)-5-oxo-5-(tritylamino)pentanoyl)sulfamate, 95%, 5mg