cyclooctatetraene

例句：

1. 1.This compound is a key intermediate in the synthesis of many important chemicals.
   这种化合物是合成许多重要化学品的关键中间体。
2. 2.The cyclooctatetraene ring has been found to play a crucial role in biological processes.
   环辛四烯环被发现在生物过程中起着关键作用。
3. 3.Cyclooctatetraene is a rare and valuable material that can be used in various applications.
   环辛四烯是一种稀有且有价值的材料，可以用于各种应用。