Showing structure for 1-(acetyloxy)-5,10-dihydroxy-3-methoxy-7,8-dimethyl-7-(3-methylidenepent-4-en-1-yl)-1h,3h,5h,6h,6ah,8h,9h,10h-naphtho[1,8a-c]furan-9-yl deca-2,4-dienoate