(2R)-4-{(1S,3E)-3-[{(1S,2R,4aS,6R,8S,8aR)-6,8-Dimethyl-2-[(1E)-1-methylprop-1-en-1-yl]-1,2,4a,5,6,7,8,8a-octahydronaphthalen-1-yl}(hydroxy)methylene]-2,4-dioxocyclopentyl}-2-hydroxy-2-methylbutanoic acid AIDS-013155 AIDS013155