We also release the H plus ion and we produce the six phosphoglucano delta lactone molecule. So this is essentially an Esther bond that we form. And so this is known as an intramolecular estermolecule. And this bond here will be broken in step two, as we'll see in just a moment. So the important part of this step is we generate the much needed reducing agent molecule, this molecule here. We also form the Esther bond here that will be broken down in step two.