(1S)-1-[({[3-(Azadiazomvinyl)-5-(5-methyl-2,4-dioxo(1,3-dihydropyrimidinyl))oxolan-2-yl]methoxy}(hydroxyphosphoryl)oxy)methyl]-2-hexadecanoyloxyethyl hexadecanoate .sn.-2,3-Dipalmitoyl-glycero-3-phospho-AZT AIDS-094309 AIDS094309