15-alpha-Methyl-19,20-di-O-acetylpuupehenol 19,20-diacetyl-15-alpha-methylpuupehenol AIDS-048873 AIDS048873 Acetic acid (4aS,6aS,12S,12aR,12bS)-9-acetoxy-4,4,6a,12,12b-pentamethyl-1,3,4,4a,5,6,6a,12,12a,12b-decahydro-2H-benzo[a]xanthen-10-yl ester