Carbamic acid, N-[6-chloro-1-[5-O-[(1S)-1-(diethoxyphosphinyl)-1-(hydroxymethyl)-2-[2-(trimethylsilyl)ethoxy]ethyl]-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N-cyclopentyl-, 1,1-dimethylethyl ester

Carbamic acid, N-[6-chloro-1-[5-O-[(1R)-1-(diethoxyphosphinyl)-1-[[2-(trimethylsilyl)ethoxy]methyl]-2-[[2-[[2-(trimethylsilyl)ethoxy]methyl]-2H-tetrazol-5-yl]methoxy]ethyl]-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N-cyclopentyl-, 1,1-dimethylethyl ester

Carbamic acid, N-[6-chloro-1-[5-O-[(1R)-1-(diethoxyphosphinyl)-3-(hydroxyamino)-1-(methoxymethyl)-3-oxopropyl]-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N-cyclopentyl-, 1,1-dimethylethyl ester

Carbamic acid, N-[6-chloro-1-[5-O-[(1S)-1-(diethoxyphosphinyl)-3-(hydroxyamino)-1-(methoxymethyl)-3-oxopropyl]-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N-cyclopentyl-, 1,1-dimethylethyl ester