IUPAC:(1S,2S,6Z,10S,11S,16Z)-6,16-dibutylidene-5,15-dioxapentacyclo[9.5.2.0^{1,13}.0^{2,10}.0^{3,7}]octadeca-3(7),12-diene-4,14-dione
IUPAC:(1S,2S,6Z,10S,11S,16Z)-6,16-dibutylidene-5,15-dioxapentacyclo[9.5.2.0^{1,13}.0^{2,10}.0^{3,7}]octadeca-3(7),12-diene-4,14-dione