IUPAC:(1R,2R,5R,8R,9S,10R,11R)-11-methyl-6-methylidene-16-oxo-15-oxapentacyclo[9.3.2.1^{5,8}.0^{1,10}.0^{2,8}]heptadecane-9-carboxylic acid
IUPAC:(1R,2R,5R,8R,9S,10R,11R)-11-methyl-6-methylidene-16-oxo-15-oxapentacyclo[9.3.2.1^{5,8}.0^{1,10}.0^{2,8}]heptadecane-9-carboxylic acid