IUPAC:(1R,2R,7S,10R,13R,18R,19R)-18-(furan-3-yl)-12-{2-[(1R,2R,7S,10R,13R,18R,19R)-18-(furan-3-yl)-9,9,13,19-tetramethyl-12,16-dioxo-4,8,17-trioxapentacyclo[11.8.0.0^{2,7}.0^{2,10}.0^{14,19}]henicos-14-en-5-ylidene]-1lambda3,2lambda3-dioxidan-1-ylidene}-9,9,13,19-tetramethyl-4,8,17-trioxapentacyclo[11.8.0.0^{2,7}.0^{2,10}.0^{14,19}]henicos-14-ene-5,16-dione
IUPAC:(1R,2R,7S,10R,13R,18R,19R)-18-(furan-3-yl)-12-{2-[(1R,2R,7S,10R,13R,18R,19R)-18-(furan-3-yl)-9,9,13,19-tetramethyl-12,16-dioxo-4,8,17-trioxapentacyclo[11.8.0.0^{2,7}.0^{2,10}.0^{14,19}]henicos-14-en-5-ylidene]-1lambda3,2lambda3-dioxidan-1-ylidene}-9,9,13,19-tetramethyl-4,8,17-trioxapentacyclo[11.8.0.0^{2,7}.0^{2,10}.0^{14,19}]henicos-14-ene-5,16-dione