1-(4-羟基苯基)-2-甲氧基乙烷-1-酮

4-苯甲酰基苯基乙酸酯

对羟基苯乙酸

4-(4-acetyloxybenzoyl)oxybenzoic acid

4-[4-(4-hydroxybenzoyl)oxybenzoyl]oxybenzoic acid