We mix it with an H plus ion, and we basically form a molecule known as alpha ketonoglutrate. So the highly unstable oxylosuxanate can now undergo a decarboxylation reaction. So this was the oxidation reduction reaction, and this is the decarboxylation step. And actually, as we'll discuss in much more detail in a future lecture, this essentially is the step, the formation of the alpha ketoglutter rate is the step that actually determines the rate at which the citric acid cycle actually takes place. So this is a very important step. And if we sum up these two steps, these two reactions of step three, this is the net reaction that we're going to get.