And so ultimately, we attach an oxygen here onto this carbon, and the other oxygen goes onto this ring here. So now we have two oxygen atoms here, two oxygen atoms here, and this carbon dioxide group was basically removed as carbon dioxide. Now, in the next step, we want to use, yet again, a dioxygenase. So now we use homogeneousate one two dioxygenase. Again, we use a diatomic water, a diatomic oxygen. One of the oxygen is basically attached onto this carbon.