Showing structure for (3ar,4s,8s,9ar,9br)-8-hydroxy-6-(hydroxymethyl)-3,9-dimethylidene-2-oxo-3ah,4h,5h,7h,8h,9ah,9bh-azuleno[4,5-b]furan-4-yl (2z)-2-methylbut-2-enoate