(2S)-2-amino-4-(((2S,3S,4R,5R)-5-(4-amino-5-cyanopyrrolo(2,3-d)pyrimidin-7-yl)-3,4-dihydroxyoxolan-2-yl)methylsulfanyl)butanoic acid
(2s)-2-amino-4-(((2s,3s,4r,5r)-5-(4-amino-5-cyanopyrrolo(2,3-d)pyrimidin-7-yl)-3,4-dihydroxyoxolan-2-yl)methylsulfanyl)butanoic acid