4-Amino-1-<2,3-dideoxy-5-O-<(1,1-dimethylethyl)dimethylsilyl>-a-D-glycero-pentofuranosyl>-1H-pyrrol<2,3-b>pyridine

1-(5-hydroxymethyl-tetrahydro-furan-2-yl)-1H-pyrimidine-2,4-dione