IUPAC:(1R,2S,3S,4R,6R,8S,11S,13S,15R)-6-methyl-2-(2-oxopropyl)-16-oxapentacyclo[13.2.2.0^{1,13}.0^{3,11}.0^{4,8}]nonadec-9-ene-7,17,18-trione
IUPAC:(1R,2S,3S,4R,6R,8S,11S,13S,15R)-6-methyl-2-(2-oxopropyl)-16-oxapentacyclo[13.2.2.0^{1,13}.0^{3,11}.0^{4,8}]nonadec-9-ene-7,17,18-trione