1-Benzoyl-9-(2-isopropenyl-5-methyl-hex-4-enyl)-4,4,12,12-tetramethyl-11-(3-methyl-but-2-enyl)-3-oxa-tricyclo[7.3.1.0^(2,7)]trideca-2(7),5-diene-8,13-dione 10-benzoyl-6-(2-isopropenyl-5-methylhex-4-en-1-yl)-2,2,9,9-tetramethyl-8-(3-methylbut-2-en-1-yl)-2,6,7,8,9,10-hexahydro-5H-6,10-methanocycloocta[b]pyran-5,11-dione 11-(3-Methylbut-2-enyl)-9-[5-methyl-2-(1-methylvinyl)hex-4-enyl]-4,4,12,12-tetramethyl-3-oxa-1-(phenylcarbonyl)tricyclo[7.3.1.0<2,7