AIDS-097231 AIDS097231 [1S-[1R*,2S*(2S*,3R*)1]-[3-[[4-Cyclohexyl-3-[[(1,11-dimethylethoxy)carbonyl]-amino]-droxybutyl]amino-2-hydroxy-1(phenylmethyl)propyl]carbamic acid, 1,1-dimethylethyl eslter