Showing structure for (1r,3s,5r,6ar,7s,8s,10as)-1,3-bis(acetyloxy)-7,8-dimethyl-7-[(2e)-3-methylpenta-2,4-dien-1-yl]-1h,3h,5h,6h,6ah,8h,9h,10h-naphtho[1,8a-c]furan-5-yl (2s)-2-methylbutanoate