4H-Imidazol-4-one, 3,5-dihydro-5,5-diphenyl-

4,4-diphenylimidazolidine-2-thione

5,5-diphenyl-2,3-dihydroimidazo[2,1-b][1,3]thiazol-6-one

6,6-diphenyl-2,3-dihydroimidazo[2,1-b][1,3]thiazol-5-one

6,6-diphenyl-3,5-dihydro-2H-imidazo[2,1-b][1,3]thiazole