Showing structure for 1-hydroxy-3-{[6-hydroxy-7-(3-methylbut-2-en-1-yl)-2-(2-methylbut-3-en-2-yl)-1h-indol-3-yl]methyl}-3h,6h,7h,8h,8ah-pyrrolo[1,2-a]pyrazin-4-one