2(1H)-Pyrimidinone, 1-[5-O-[[[[2-chloro-1-[(hexadecyloxy)methyl]ethoxy]hydroxyphosphinyl]oxy]hydroxyphosphinyl]-b-L-ribofuranosyl]-3,4-dihydro-4-imino- AIDS-158464 AIDS158464 NSC669254 (SODIUM SALT)