(1S,2S,3R,5S)-3-[7-Amino-5-(propylsulfanyl)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl]-5-(2-hydroxyethoxy)cyclopentane-1,2-diol;(1S,2S,3R,5S)-3-(7-Amino-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl)-5-(2-hydroxyethoxy)cyclopentane-1,2-diol; (1S,2S,3R,5S)-3-[7-Amino-5-(propylthio)-3H-1,2,3-triazolo[4,5-d]pyrimidin-3-yl]-5-(2-hydroxyethoxy)-1,2-cyclopentanediol;(1S,2S,3R,5S)-3-{7-Amino-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl}-5-(2-hydroxyethoxy)cyclopentane-1,2-diol