(E)-N-(2-cyanoethyl)-N-(5-hydroxylpentyl)-2,3-di-O-tert-butyldimethylsilyl-5,6-dideoxy-1-(uracil-1-yl)-β-D-ribo-5-ene-heptofuranuronamide

1-((2R,3R,4S,5S)-3,4-dihydroxy-5-((S)-5-oxo-1,2-dithiolan-3-yl)-tetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione