IUPAC:(1R,2S,3S,4S,7R,10R,13R,17R)-17-hydroxy-4-methyl-14-methylidene-5-oxo-6-oxapentacyclo[11.2.1.1^{4,7}.0^{1,10}.0^{3,9}]heptadec-8-ene-2-carboxylic acid
IUPAC:(1R,2S,3S,4S,7R,10R,13R,17R)-17-hydroxy-4-methyl-14-methylidene-5-oxo-6-oxapentacyclo[11.2.1.1^{4,7}.0^{1,10}.0^{3,9}]heptadec-8-ene-2-carboxylic acid