1-[4-({[3-Fluoro-5-(5-methyl-2,4-dioxo(1,3-dihydropyrimidinyl))oxolan-2-yl]methyl}(hydroxyphosphoryl)oxy)-5-(hydroxymethyl)oxolan-2-yl]-5-methyl-1,3-dihydropyrimidine-2,4-dione AIDS-072913 AIDS072913