IUPAC:(3S,4R,6R,8S,11S,13R,15R)-13-hydroxy-6-methyl-16-oxatetracyclo[13.2.2.0^{3,11}.0^{4,8}]nonadeca-1,9-diene-7,17,18-trione
IUPAC:(3S,4R,6R,8S,11S,13R,15R)-13-hydroxy-6-methyl-16-oxatetracyclo[13.2.2.0^{3,11}.0^{4,8}]nonadeca-1,9-diene-7,17,18-trione