[(10-氧代菲-9-亚基)氨基]脲

(2,3-dihydroinden-1-ylideneamino)urea

[(Z)-[phenyl(pyridin-2-yl)methylidene]amino]urea

(2,6-dimethylheptan-4-ylideneamino)urea

[(E)-3-methylpentan-2-ylideneamino]urea