And the final step in this process basically kicks off a carbon dioxide. So this carbon dioxide shown here is basically kicked off, it's eliminated. So we have a decarboxylation step that is catalyzed by this decarboxylase enzyme and we form this UMP molecule. So urine monophosphate. Now, once we form UMP, this UMP is then transformed into UDP urine diphosphate by UMP kinase. And finally UDP is transformed into UDP by nucleotide diphosphate kinase.