And that fad molecule will be reduced. It will take these two H atoms, as well as a single electron from each one of these atoms, which will end up on this molecule known as our fadh two high energy electron carrier. And once these two leave, we form a pi bond between carbon one and carbon two, as shown. And this is known as the fumerate molecule. Next, we take the fumerate. We basically input a water molecule, and that water molecule basically goes onto these two carbons.