So this entire structure, which is not shown, is actually attached onto the enzyme. And so we take the hydroethyl TPP complex, it reacts with the lipoamide structure, and we form this complex known as acetolipoamide. And we also regenerate the TPP that we begin with. Remember, these coenzymes have to be regenerated. So we begin with TPP and we regenerate that TPP so that in the next cycle, this same molecule can be reused by another pyruvate decarboxylation step. Now, let's focus on the cetolipide.