So we can't convert that acetyl coenzyme A into an intermediate of the citric acid cycle. And what will happen is the acetyl coenzyme A molecules, two of them, will be combined via process catalyzed by thylase, and we form acetoacetal coenzyme A. We also release a coenzyme A. So in the first step, two molecules of acetylcoenzme A are combined to form acetoacetal coenzyme A. And this is a reversible reaction that is catalyzed by thylase. Now, in the next step, the next step is actually a rate determining step.