Showing structure for methyl (1s,4br,5r,8s,8as,9s,9ar)-9-(acetyloxy)-1-(furan-3-yl)-5-hydroxy-4,8-dimethyl-3-oxo-1h,4bh,5h,6h,7h,8ah,9h,9ah-indeno[2,1-c]pyran-8-carboxylate