And the way that we prepare the molecule is by opening up the ring structure. We open up that ring structure via a hydrolysis reaction which is catalyzed by an enzyme known as Latinase. So Latinase catalyzes the hydrolysis of this aster bond. And so we transform the six phosphorlucano delta lactone into a six phosphoglucanate molecule. We also release the H plus ion as shown here. So once we open up this molecule, it's now ready to undergo a decarboxylation reaction.