2,4(1H,3H)-Pyrimidinedione, 1-[3-azido-2,3-dideoxy-5-O-(11,17,20-trihydroxy-3,21-dioxopregna-1,4-dien-21-yl)-.beta.-L-erythro-pentofuranosyl]-5-methyl- AIDS-148408 AIDS148408 NSC680662