And when we break that bond, that actually releases a certain amount of energy, that releases 20 kilojoules of energy. And so that's exactly why we call this an activated bond. Because it's an activated bond, it's very reactive. And in the final step, we're going to basically use this high energy in the bond to attach that molecule onto that Pyruvate to form the oxyloace. So, once again, the bond holding the CO2 and the biotin enzyme together is quite unstable and quite reactive. And so when we cleave that in the next step, that will release 20 kilojoules of energy per mole that we actually use up.