(Z)-4-methoxy-4-oxobut-2-en-2-yl benzoate

(4-methoxy-4-oxobut-2-en-2-yl) benzoate

5-methoxy-1,3-dimethylpyrazole

3-乙酰基-6-硝基-2H-苯并吡喃-2-酮

2-(((1H-1,2,4-triazol-5-yl)imino)methyl)-4-nitrophenol