dimethyl 3-methyl-4-phenylthiophene-2,5-dicarboxylate

1,1,2-trimethoxypropane

methyl 2-(benzylamino)benzoate

1,4-bis(prop-2-enoxy)-4a,5,6,7,8,8a-hexahydroquinoxaline-2,3-dione

1-(3,4-dimethoxyphenyl)-2-phenylethane-1,2-dione