9H-Purin-6-ol, 9-[5-O-[[[6-[[(1-[1,1'-biphenyl]-4-yl-1-methylethoxy)carbonyl]amino]hexyl]amino]carbonyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-.beta.-L-erythro-pentofuranosyl]- AIDS-140070 AIDS140070 NSC650873