120826-45-1 2,5'-Anhydro-3'-azido-2',3'-dideoxyuridine 6,9-Epoxy-2H,6H-pyrimido(2,1-b)1,3)oxazocin-2-one, 8-azido-7,8,9,10-tetrahydro-, (6R-(6alpha,8alpha,9alpha))-