150998-99-5 AIDS-028276 AIDS028276 Cyanthiwigin B Cyclohept[e]indene-3,4-dione, 3a,5,5a,6,9,10,10a,10b-octahydro-3a,5a,8-trimethyl-1-(1-methylethyl)-, (3aR,5aR,10aR,10bS)-