AIDS-081479 AIDS081479 N.alpha.-[(2S,4S,5S)]-5-[N-[N.alpha.-(Phenoxymethylcarbonyl)-L-histidyl]amino-4-hydroxy-2-isopropyl-7-methyl-1-oxooctyl]-N-[2-(2-pyridinylamino)ethyl]-L-isoleucinamide POA-His-LVA-Ile-NH(CH2)NH-pyridine