So we have to make it much more reactive and higher in energy. And what we do is we essentially attach a phosphoryl group as well as a uridine molecule onto this section to form the UDP glucose. So that takes place in this step three. So we take the glucose one phosphate shown here and then we basically reacted with a urine triphosphate in the presence of the enzyme known as UDP glucose pyrophosphorylase. And what this enzyme basically does is it attaches the phosphoryl group and the urine onto this region. So we generate the following molecules.