In the process, we abstract a Hydride ion, so an H ion and two electrons. And so here we use the NAD plus to form the NADH, and the NADH then can be used by the electron transport chain. Now, one thing I want to mention briefly about this step eight is it's actually a very undergone step. It actually requires energy. And so what happens is several processes that take place in the citric acid cycle and on the transport chain are actually used to power to couple this particular process. For instance, step one of the citric acid cycle that takes place as soon as we produce oxylacetate is actually used to drive this particular reaction forward.