So we ultimately move this acetyl group from the 16 onto the ACP, and we generate this molecule here, which we call aceto, acetoacetyl coand, acetoacetatel, ACP intermediate. So we see that the Zekerboxylation of the Melania group sets up the reaction for a nucleophilic attack that cleaves the high energy Thioester bond. This bond here and the product of this is aceto, acetyl attached onto the ACP molecule. So this is what we call the condensation step. Now, notice what else this step actually tells us. It tells us that even though we used this as a carbon source to actually generate the Malaco enzyme A in this step here, that carbon source, namely the carbon dioxide, is actually removed.