N-(9-((2r,3r,4r,5r)-5-((双(4-甲氧基苯基)(苯基)甲氧基)甲基)-4-羟基-3-甲氧基四氢呋喃-2-基)-9H-嘌呤-6-基)苯甲酰胺 110764-72-2