(2R,3R,4R,5R)-2-(((bis(3-bromopropoxy)phosphorothioyl)oxy)methyl)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-3,4-diyl diacetate

(2R,3R,4S,5R,6S)-2-(acetoxymethyl)-6-((3-(((3-bromopropoxy)(((2R,3R,4R,5R)-3,4-diacetoxy-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl)methoxy)phosphorothioyl)oxy)propyl)thio)tetrahydro-2H-pyran-3,4,5-triyl triacetate