2-phenyl-quinoline-3,4-dicarbonitrile

5,7-ditert-butyl-3,3-dimethyl-1H-indol-2-one

2-(5,7-di-tert-butyl-3,3-dimethyl-2-indolinylidene)-2-formylacetonitrile

2,3-bis(5,7-di-tert-butyl-3,3-dimethyl-3H-indol-2-yl)fumarodinitrile