AIDS-086599 AIDS086599 [2S-(2R*,2'S*,3'R*)]-1-[2'-Hydroxy-3'-phenylthiomethyl-4'-aza-5'-oxo-5'-[3''-methyl-pyrid-4''-yl)]pentyl]-4-(pyrid-3''-ylmethyl)piperazine-2-N-t-butylcarboxamide