So remember what Atcase actually does. It catalyzes the conversion of a molecule called aspartate and a second molecule called carbomol phosphate. So it combines these two molecules to form the end carbomol aspartate as well as a single orthophosphate molecule. Now, what this molecule does is scientists created so scientists created this irreversible inhibitor, a bisubstrate analog known as the poly molecule which stands for and phosphor, acetyl, l, aspartate. And the structure of this poly molecule resembles the intermediate molecule that is formed in the bisynthesis of the CTP molecule. And this is what polar actually looks like.