4-nitro-1,7-diphenylheptane-1,7-dione

methyl 2-cyano-5-oxo-2-(3-oxo-3-phenylpropyl)-5-phenylpentanoate

(4E)-4-[(2,4-dinitrophenyl)hydrazinylidene]-4-phenylbutanoic acid

3-[bis(3-oxo-3-phenylpropyl)amino]-1-phenylpropan-1-one

3-[(3-oxo-3-phenylpropyl)-prop-2-ynylamino]-1-phenylpropan-1-one