So what this dehydration reaction does, and we call it dehydration because the water molecule is lost. What this dehydration reaction does is increases the phosphoryl transfer potential of this molecule. So this molecule has a lower ability to give off asphalt groups than this molecule here. And so the phosphorynopyrulvate is much more likely to donate one of its phosphoryl groups onto that ATP molecule because ultimately, in the final step, step ten of Glycolysis, step five of stage three, we want to form ATP molecules. So in the next step, this is the reaction that takes place. We take this phosphorinopyruvate, also known as pep.