6H-Furo[2',3':4,5]oxazolo[3,2-a]pyrimidin-6-one, 2,3,3a,4a,5,9a-hexahydro-3-hydroxy-2-(hydroxymethyl)-7-methyl-, (2R,3R,3aS,9aR)-
6H-Furo[2',3':4,5]oxazolo[3,2-a]pyrimidin-6-one, 2,3,3a,4a,5,9a-hexahydro-3-hydroxy-2-(hydroxymethyl)-7-methyl-, (2R,3R,3aS,9aR)-