Showing structure for (3ar,4s,5ar,6r,7r,9as,9br)-7-(acetyloxy)-4-hydroxy-5a,9-dimethyl-3-methylidene-2-oxo-3ah,4h,5h,6h,7h,9ah,9bh-naphtho[1,2-b]furan-6-yl 2-(hydroxymethyl)prop-2-enoate