It's basically two benzene rings stuck together.

它基本上是两个苯粘在一起。

Consider this molecule, a hexane with a benzene ring attached to carbon number 2.

考虑这个分子， 一个苯连接到碳数 2 己烷。

Plus, aldehydes usually have strong smells, and vanillin also contains a ring of six carbon atoms, known as a benzene ring, that tends to make chemicals even smellier.

此外，醛通常有强烈气味，而香草醛还含有一个由六个碳原子组成， 为苯，这往往会使化学物质更臭。

And scientists already knew how to make it -- one way involved combining methyl alcohol and anthranilic acid, a type of acid with one of those smelly benzene rings.

科学家们已经知道如何制造它——一种方法是将甲醇和邻氨基苯甲酸结，邻氨基苯甲酸是一种带有臭味苯酸。