geranene

例句：

1. 1. The molecule is composed of two carbon atoms and one germane atom.
   这个分子由两个碳原子和一个 germane 原子组成。
2. 2. The compound has a molecular formula of C3H6O2.
   该化合物的分子式为C3H6O2。
3. 3. The germane atom is essential for the formation of the compound.
   germane 原子对于化合物的形成至关重要。