Showing structure for (3s,5as,5br,7as,8s,11as,11br,13s,13as)-8-ethyl-3,13-dihydroxy-3,5b,8,11a,13a-pentamethyl-4h,5h,5ah,6h,7h,7ah,9h,10h,11h,11bh,12h,13h-chryseno[1,2-c]furan-1-one