But pentane, C5H12, has 3 possible isomers and C6H14, known as hexane, has 5.

但是戊烷 C5H12 有 3 种可能的异构体， 而称为己烷的 C6H14 有 5 种。

Sometimes, a hexane can look like a pentane with an ethane sticking off of it.

有时，己烷看起来像戊烷， 上面粘着乙烷。