AIDS-089070 AIDS089070 [3S-[2-[.gamma.R*(and S*),.gamma[alpha.S*[1R*,1(R*)]]],3.alpha.,4a.beta.,8a.beta.]]-3-[[(1,1-Dimethylethyl)amino]carbonyl]octahydro-.gamma.-hydoxy-N-[[2-methyl-1-[[(2-pyridinylmethyl)amino]carbonyl]butyl]-.alpha.-(phenylmethyl)-2(1H)-isoquinolinepentamide