(2R,3R,4R,5R)-N-[(1S)-2-Methyl-1-(N-methylcarbamoyl)propyl]-N'-[(1S)-2-methyl-1-(N-methylcarbamoyl)propyl]-2,5-bis[(2,5-dimethylphenyl)methoxy]-3,4-dihydroxyhexane-1,6-diamide AIDS-113219 AIDS113219