And in the end, we produce the final product, the fructose six phosphate, which is our keto product molecule. So we have product one, the urethrase four phosphate, that's the aldos. And then we have product two, the fructose six phosphate, that's the ketos products. So these are the two products that are formed. These are the two reactants that are actually used. And notice that unlike the transketulates, the trans aldalase differs in two ways.