IUPAC:(1S,2S,6S,10R,11S,14S,15R,18R,20S)-20-hydroxy-8,8,14,15,19,19-hexamethyl-10-[(3-methylbut-2-enoyl)oxy]-21-oxahexacyclo[18.2.2.0^{1,18}.0^{2,15}.0^{5,14}.0^{6,11}]tetracos-4-ene-11-carboxylic acid
IUPAC:(1S,2S,6S,10R,11S,14S,15R,18R,20S)-20-hydroxy-8,8,14,15,19,19-hexamethyl-10-[(3-methylbut-2-enoyl)oxy]-21-oxahexacyclo[18.2.2.0^{1,18}.0^{2,15}.0^{5,14}.0^{6,11}]tetracos-4-ene-11-carboxylic acid