(20R)-Dammara-13(17),24-dien-3 beta-ol (3S,5R,8R,9R,10R,14R)-17-((R)-1,5-Dimethyl-hex-4-enyl)-4,4,8,10,14-pentamethyl-2,3,4,5,6,7,8,9,10,11,12,14,15,16-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol AIDS-075042 AIDS075042 Isoeuphol