(2R,3R,4R,5R)-N'-[(1S)-2-Methyl-1-(N-methylcarbamoyl)propyl]-2,5-bis(phenyl-2-pyridylmethoxy)-3,4-dihydroxy-N-[2-methyl-1-(N-methylcarbamoyl)propyl]hexane-1,6-diamide AIDS-170870 AIDS170870