IUPAC:(1S,4S,8R,10R,11S,14S)-11-ethyl-12-oxo-7,9,13-trioxatetracyclo[6.5.1.0^{1,10}.0^{4,14}]tetradeca-2,5-diene-5-carboxylic acid
IUPAC:(1S,4S,8R,10R,11S,14S)-11-ethyl-12-oxo-7,9,13-trioxatetracyclo[6.5.1.0^{1,10}.0^{4,14}]tetradeca-2,5-diene-5-carboxylic acid