(1R,2S,5R)-2-isopropyl-5-methylcyclohexyl (2R,5S)-5-[4-(methylcarboxamido)-2-oxo-1,2-dihydro-1-pyrimidinyl]-1,3-oxathiolane-2-carboxylate

(2R,5S)-5-(N-4-acetylcytosin-1-yl)-1,3-oxathiolane-2R-carboxylic acid (1'R,2'S,5'R)-menthyl ester

(1R,2S,5R)-2-isopropyl-5-methylcyclohexyl (2R,5S)-5-(4-acetylamino-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolane-2-carboxylate

5-(4-acetylamino-2-oxo-2H-pyrimidin-1-yl)-[1,3]oxathiolane-2-carboxylic acid 2-isopropyl-5-methyl-cyclohexyl ester