4H-pyrazolo[3,4-d]pyrimidin-4-one, 6-amino-3-bromo-1-(2-deoxypentofuranosyl)-1,5-dihydro- 6-amino-3-bromo-1-(2-deoxypentofuranosyl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one InChI=1/C10H12BrN5O4/c11-7-6-8(13-10(12)14-9(6)19)16(15-7)5-1-3(18)4(2-17)20-5/h3-5,17-18H,1-2H2,(H3,12,13,14,19