So now the isocytrate is able to undergo the decarboxylation reaction. So basically, I group step one and step two into the same stage. Let's call that stage one because these two steps involve preparing our molecule for decarboxylation. So let's call these two steps stage one. Now let's move on to stage two, which basically involves step three, step four and step five. In these steps, as we'll see in just a moment, we have the decarboxylation reactions taking place, and we also form the only molecule that has the high energy phosphate group, our GTP, in this stage.