pentalenolactone

例句：

1. 1.The compound has been shown to have anticancer properties.
   这种化合物已被证明具有抗癌性质。
2. 2. Pentalenone is a natural pigment found in certain plants.
   五环烯酮是一种存在于某些植物中的天然色素。
3. 3. The discovery of pentalenolactone may lead to new treatments for cancer patients.
   五环烯酮的发现可能为癌症患者带来新的治疗手段。