1-[(2S,4S,5R)-2-(2,2-Dimethyl-propionyl)-4-hydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl]-1H-pyrimidine-2,4-dione

1-[(2S,4S,5R)-4-(tert-Butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-2-(1-imino-2,2-dimethyl-propyl)-tetrahydro-furan-2-yl]-1H-pyrimidine-2,4-dione

1-[(2S,3aS,9aR)-2-(1-Hydroxy-2,2-dimethyl-propyl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-2-yl]-1H-pyrimidine-2,4-dione