And once we generate that sigma bond, we essentially generate that same molecule that we had in this particular case. The next process is a reduction step, because that's the opposite of this oxidation step. So we're going this way here, and that means we essentially want to add an extra number of electrons along with h atoms. And so we generate we transform this ketone group into this alcohol group. Once we form that, we want to remove that hydroxyl. And the way that we remove that hydroxyl is via dehydration step.