你知道吗？在化学的世界里，有一种神奇的物质，它的名字叫做水杨酸。听起来是不是有点陌生？别急，让我带你一起探索这个小小的分子，看看它究竟有什么样的魔力。

水杨酸的起源与发现

水杨酸，这个名字听起来有点文艺范儿，但它可是有着悠久的历史呢。早在19世纪，科学家们就在柳树皮中发现了这种物质。没错，就是那种我们常见的柳树，它的皮里竟然藏着这么一个宝贝！后来，人们发现水杨酸具有镇痛、消炎的作用，于是就开始大规模地提取和使用它。

水杨酸的结构式揭秘

那么，水杨酸的结构式是什么样的呢？它由一个苯环和一个羧基组成，听起来是不是有点复杂？别担心，我来给你画个图，让你一目了然。

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