2-(3-propan-2-ylidenecyclopentylidene)ethanol

1-[2-Bromo-eth-(Z)-ylidene]-3-isopropylidene-cyclopentane

5-(3-isopropylidene-1-cyclopentylidene)-2-pentanone

[3-Isopropenyl-cyclopent-(Z)-ylidene]-acetic acid ethyl ester

ethyl (4Z)-2-acetyl-4-(3-isopropylidene-1-cyclopentylidene)butanoate