N4 - ((3AS，4R，6S，6AR)-6-(2 - ((叔丁基二甲基硅烷基)氧基)乙氧基)-2

N4-((3As，4R，6S，6Ar)-6-(2-((Tert-Butyldimethylsilyl)Oxy)Ethoxy)-2，2-Dimethyltetrahydro-3Ah-Cyclopenta[D][1，3]Dioxol-4-Yl)-6-Chloro-2-(Propylthio)Pyrimidine-4，5-Diamine