tetradecahydro-Phenazine
4,4'-bis(1H-pyrazol-4-yl)biphenyl, 4,4'-di(1H-pyrazol-4-yl)biphenyl
2,2'-Bipyrrole
4-(1H-imidazol-1-yl)pyridine
3-(2H-Tetrazol-5-yl)pyridine