7-chloro-1-(2,6-dichlorophenyl)-5-(2,4-difluorophenyl)-1,6-naphthyridin-2-one

dimethyl 3,6-dimethylpyrazine-2,5-dicarboxylate

3-(5,7-diethoxy-2-oxochromene-3-carbonyl)-5,7-diethoxychromen-2-one

dimethyl 5-cyclopropyl-2-hydroxybenzene-1,3-dicarboxylate

dimethyl 3-acetyloxypentanedioate