So these are the two products of step two. Now, this product will go on to carry out step three, and this product will go on to carry out step four. Now, step three is important because in step three, what we want to do is we want to reform the UDP glucose. And the way that we reform the UDP glucose is by taking this molecule, the UDP galactose, which looks like this. So in step two, we form this molecule, right, this molecule here, which is the UDP galactose. And now what we do to this molecule is we use a special enzyme that flips this hydroxyl group from the up position to the down position.