So in stage two, the second step, the fifth step is to take the dihydroxy acetone phosphate and transform it into the PGAL by using an enzyme known as trio's phosphate, osamrase. So in stage two, we basically do not use any energy and the entire goal is to produce two PGAL molecules. And finally, let's move on to step three, or stage three. So stage three itself involves five individual steps, and this is the process where we produce our ATP molecules as well as the water molecules and our NADH molecules. So let's begin with stage three. And we begin with the PGAL molecule that we form in stage two.