1-(2,3,3a,8b-tetrahydro-1H-cyclopent[b]indol-4-yl)-cyclopentanecarbonitrile

琥珀酸

cyclopentylidene-malonic acid

1-(1,2,3,4,4a,9a-hexahydro-carbazol-9-yl)-cyclopentanecarbonitrile

乙醚