So step two does not require energy. And in step three, we take the fructose six phosphate and we use an enzyme known as phosphor fructose kinase. We use an ATP molecule and transfer a second phosphate group onto that fructose. So fructose 116 biphosphate is formed that contains one two high energy phosphate groups. And we also utilize that ATP molecule. So this is a very unstable molecule compared to our glucose.