2',3,-O-Isopropylidene-5'-deoxy-6(R),5'-cyclo-5,6-dihydrouridine 2,3-Idcd 4,11-Epoxy-1,3-dioxolo(4,5-e)pyrimido(1,6-a)azepine-6,8(7H,9H)-dione, hexahydro-2,2-dimethyl-, (3aR-(3aalpha,4beta,9aalpha,11beta,11aalpha))- 79298-16-1