1-((2R,3R,4S,5R)-4-hydroxy-5-(hydroxymethyl)-3-methyltetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione

1-((6aR,8R,9aS)-2,2,4,4-tetraisopropyl-9-methylenetetrahydro-6H-furo[3,2-f][1,3,5,2,4]trioxadisilocin-8-yl)-pyrimidine-2,4(1H,3H)-dione