162666-34-4 2,6-(1H,3H)-Pyrazinedione, 1-hydroxy-5-(2-methylpropyl)-3-(2-methylpropylidene)-, (3Z)- 2,6-(1H,3H)-Pyrazinedione, 1-hydroxy-5-(2-methylpropyl)-3-(2-methylpropylidene)-, (Z)- Flutimide