Showing structure for (1s,3r,5r,6as,7r,8s,9r,10r,10ar)-1,3-bis(acetyloxy)-9,10-dihydroxy-7,8-dimethyl-7-(3-methylidenepent-4-en-1-yl)-1h,3h,5h,6h,6ah,8h,9h,10h-naphtho[1,8a-c]furan-5-yl butanoate