Well, if the conditions are right for fatty acid synthesis, that is, if we have high levels of Sutrade and high levels of ATP, then that will promote the process of fatty acid synthesis. And what that means is we're going to commit the CETL Co enzyme A molecule, to actually undergoing fatty acid synthesis. And this is the step that commits the CETL Co enzyme A to helping form that fatty acid chain. So let's see what the step actually consists of. So firstly, the enzyme that catalyzed this step is a carboxylase. More specifically, it's acetylco enzyme A carboxylase.