[diacetyloxy-(3,4-dimethoxyphenyl)plumbyl] acetate

2,4-bis(3,4-dimethoxyphenyl)butanoic acid

2,4-bis(3,4-dimethoxyphenyl)-4-butyronitrilone

2,4-bis-(3,4-dimethoxy-phenyl)-4-oxo-butyric acid amide