Dihydrolipole dehydrogenase reforms the oxidized version of lipoamide. Because remember this step, we actually reduced this structure because two electrons from this molecule were abstracted and given to the lipoamide. And so, in the final step, we not only regenerate the lipoamide coenzyme that can be then used to restart another cycle of pyruvate carboxylation, but we also oxidize this molecule, the dihydrolipoamide. Take away those two electrons and give those two electrons ultimately onto that NAD to form the NADH that can ultimately be used by the electron transport chain on the inner membrane of the mitochondria. So, in the final step, we have the Flavon adenine dinucleotide, which is actually attached onto the enzyme. This is used to actually oxidize this molecule.