And so ultimately, we form a fumerate, because once we cleave this bond, the oxygen essentially attaches onto this carbon and this becomes a ch three. And so we form acetoacetate and fumerate. And now this can be used to form a ketone body, and this can be used to form our glucose. So we see that inside our cells, we can transform phenylalanine into tyrosine. And so ultimately, we can basically form tyrosine within this step. And both and tyrosine, by following these series of steps, can be transformed into these carbon skeletons, acetylacetate and fumerate.