2,5,6-triphenyl-2,3-dihydropyrazine

2,3-diphenyl-2H-furan-5-one

3-(4,5-diphenyl-1H-imidazol-2-yl)-2-methyl-1H-indole

4,5-dihydroxy-1,3-dimethyl-4,5-diphenylimidazolidin-2-one

1,1-dibenzoyl-2-phenylhydrazine