4H-pyrazolo[3,4-d]pyrimidin-4-one, 6-amino-2-(2-deoxypentofuranosyl)-2,5-dihydro- 6-amino-2-(2-deoxypentofuranosyl)-2,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one InChI=1/C10H13N5O4/c11-10-12-8-4(9(18)13-10)2-15(14-8)7-1-5(17)6(3-16)19-7/h2,5-7,16-17H,1,3H2,(H3,11,12,13,14,18