3-(3,4-Dihydroxybenzyl)-4-hydroxy-5-(2-isopropenyl-5-methyl-4-hexenyl)-8,8-dimethyl-1,7-bis(3-methyl-2-butenyl)bicyclo[3.3.1]non-3-ene-2,9-dione AIDS-142008 AIDS142008 NSC658581