Showing structure for 1,3-bis(acetyloxy)-7-(3-ethenyl-4-hydroxybut-2-en-1-yl)-5,9-dihydroxy-7,8-dimethyl-1h,3h,5h,6h,6ah,8h,9h,10h-naphtho[1,8a-c]furan-10-yl hexadecanoate