Well, now we can attach the sugar component onto this orotate and the molecule that we use at that sugar component is PRPP, where PRPP stands for phosphoribacyl pyrophosphate. And the enzyme that catalyzes this is primidine. Phosphoribacy transfers. Now, we'll see where this molecule comes from in a future lecture. So we basically use this molecule, we kick off this Pyrophosphate molecule and we generate this intermediate. So ultimately this entire blue structure shown here is the sugar component that came from PRPP.