Sope this is the molecule here. And so now we're going to basically label this phosphoryl group here. And in the presence of ADP, this molecule here is very highend energy. Now, one other thing I didn't mention is if you go back to organic chemistry and you compare the stability of ketones and enormolecules, we know that ketones exist in equilibrium with enormous, but the ketones are much, much more stable than those enols. So the problem with this molecule is it's actually trapped in its ENL state. So this molecule wants to transform into that more stable ketone, but it can transform because this oxygen is missing an H atom.