Showing structure for (3as,4r,5r,6s,6ar,8r,9bs)-5-(acetyloxy)-6,8-dihydroxy-6,9-dimethyl-3-methylidene-2-oxo-3ah,4h,5h,6ah,7h,8h,9bh-azuleno[4,5-b]furan-4-yl 2-methylpropanoate