IUPAC:(4R,8S,9R,11R)-11-methyl-2,7-dimethylidene-6,12-dioxo-5,14-dioxatricyclo[9.2.1.0^{4,8}]tetradec-1(13)-en-9-yl 2-methylprop-2-enoate
IUPAC:(4R,8S,9R,11R)-11-methyl-2,7-dimethylidene-6,12-dioxo-5,14-dioxatricyclo[9.2.1.0^{4,8}]tetradec-1(13)-en-9-yl 2-methylprop-2-enoate