2,4(1H,3H)-Pyrimidinedione, 1-[2,3-dideoxy-5-O-(12-iodo-1-oxododecyl)-3-(1,2-triazadien-2-iumyl)-.beta.-D-erythro-pentofuranosyl]-5-methyl-, conjugate monoacid AIDS-160989 AIDS160989 NSC664209