N-(1,2-O-isopropylidene-3-deoxy-α-D-allos-3-yl)-N-(methyl 5-deoxy-β-D-ribofuranoside-5-yl)amine

N-((3aR,5S,6R,6aR)-5-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl)-1,1,1-triphenyl-l5-phosphanimine