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