2-Cyclopenten-1-one, 4,5-dihydroxy-3-(1-propenyl)- 2-Cyclopenten-1-one, 4,5-dihydroxy-3-(1-propenyl)-, [4S-[3(E),4.alpha.,5.beta.]]- 2-Cyclopenten-1-one, 4,5-dihydroxy-3-propenyl- 582-46-7 NSC291308 TERREIN