spirobicyclohexane

例句：

1. 1. This compound is a key intermediate in the synthesis of many pharmaceutical drugs.
   这种化合物是合成许多药物的中间体的关键。
2. 2. The structure of this molecule has been studied extensively to understand its biological activity.
   这种分子的结构已经被广泛研究，以了解其生物活性。
3. 3.The spirobicyclohexane ring is a common feature in many natural products, including some antibiotics.
   螺环己烷环是许多天然产物中常见的特征，包括一些抗生素。