((3aS,4S,6S,6aS)–6–(4–Chloro–7H–pyrrolo(2,3–d)pyrimidin–7–yl)–2,2,3a–trimethyltetrahydrofuro(3,4–d)(1,3)dioxol–4–yl)methanol

((3aS,4S,6S,6aS)–6–(4–Chloro–7H–pyrrolo(2,3–d)pyrimidin–7–yl)–2,2,3a–trimethyltetrahydrofuro(3,4–d)(1,3)dioxol–4–yl)methanol