Now let's move on to discuss the remaining four steps. So in this lecture, we're going to focus on steps five, six, seven and eight of the citric acid cycle. So remember that in step four we synthesize a molecule known as succinct coenzyme a. And this is the same molecule that is used as a reaction reactin in step number five. Now in this reaction, this is actually the only step of the citric acid cycle in which we generate a high energy purine nucleuside triphosphate molecule. We generate a GTP.