2-(1-methylpyridin-4-ylidene)indene-1,3-dione

(9ci)-1H-2-苯并吡喃-1,4(3h)-二酮

methyl 2-[5-(4-methylphenyl)-1,3,4-oxadiazol-2-yl]benzoate

2-(羟基甲基)苯甲酸

methyl 2-(4-methoxybenzoyl)benzoate