[9-[(6aR,8R,9R,9aS)-9-hydroxy-2,2,4,4-tetra(propan-2-yl)-6a,8,9,9a-tetrahydro-6H-furo[3,2-f][1,3,5,2,4]trioxadisilocin-8-yl]-2-(butylsulfanylcarbonylamino)purin-6-yl] butylsulfanylformate 生成 [9-[(6aR,8R,9R,9aR)-9-(oxan-2-yloxy)-2,2,4,4-tetra(propan-2-yl)-6a,8,9,9a-tetrahydro-6H-furo[3,2-f][1,3,5,2,4]trioxadisilocin-8-yl]-2-(butylsulfanylcarbonylamino)purin-6-yl] butylsulfanylformate