5-[[(3-carboxy-4-hydroxyphenyl)methylcarbamothioylamino]methyl]-2-hydroxybenzoic acid

水杨酸烯丙酯

2-(2-hydroxybenzoyl)oxyacetic acid

2-甲氧基苯甲酸甲酯

2,4-二甲氧基苯甲酸甲酯