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