cinchonane

例句：

1. 1.The cinchona tree is a tropical plant that produces the source of the drug quinine.
   金盏树是一种热带植物，它产生的奎宁是治疗疟疾的药物。
2. 2.Cinchona bark has been used in traditional medicine for centuries to treat fever and other ailments.
   金盏树皮在传统医学中被使用了几个世纪来治疗发烧和其他疾病。
3. 3. In addition to its medicinal properties, cinchona bark is also used as a natural dye.
   除了它的药用属性外，金盏树皮还被用作天然染料。