And so this is what lipoamide looks like. It is also attached onto the enzyme. In fact, it's attached onto the serine residue of the enzyme. 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.