137755-25-0 AIDS-072208 AIDS072208 HBY 793 HBY-793 N,N'-Bis-[(2S-(1,1-dimethylethylsulfonylmethyl)-3-(1-naphthyl)propionyl)-L-valyl]-2S,5S-diamino-1,6-diphenylhexane-3R,4S-diol