AIDS-121828 AIDS121828 L-Glycero-pentonic acid, 3,4,5-trideoxy-5,5-difluoro-3-[[(2S)-4-methyl-2-[[(2S,3S)-3-methyl-1-oxo-2-[[(phenylmethoxy)carbonyl]amino]pentyl]amino]-1-oxopentyl]amino]-