9H-Purin-6-amine, 9-[5-O-[[[[[(2E)-4-(1,3-dihydro-4-hydroxy-6-methoxy-7-methyl-3-oxo-5-isobenzofuranyl)-2-methyl-2-butenyl]oxy]hydroxyphosphinyl]methyl]hydroxyphosphinyl]pentofuranosyl]- AIDS-088898 AIDS088898 C4-MAD