Showing structure for 3-({6a-hydroxy-9-methyl-3-methylidene-2-oxo-3ah,4h,7h,9ah,9bh-azuleno[4,5-b]furan-4-yl}oxy)-2-(2-hydroxyethylidene)-3-oxopropyl 4-hydroxy-2-methylbut-2-enoate