And in fact, it's this step that drives this reaction forward. Because here we cleave a high energy thio etherbond via a hydrolysis reaction. So we use a water molecule and we also combine another CETL, coenzyme A. So we combine these two molecules, we cleave a thioester bond, release the coenzyme A, and we form an intermediate known as HMG coenzyme A. Now, HMG stands for the H stands for hydroxy, the M stands for methyl and the G stands for Gluterol. So we form three hydroxy, three methylgutral coenzyme A, or simply HMG coenzyme A.