So we form the copper hydroxide group and the heme A three hydroxide group. So in step three, two more reduced cytochrome C molecules are oxidized to transfer an additional two electrons into our system. And two H plus two H plus ions are also obtained from the matrix of the mitochondria to help us break that peroxide bond, this bond here, and ultimately form these two structures. And once we form these two structures, two more protons are abstracted from the matrix, and those two protons are basically used to form two water molecules. So one of these protons is picked up by, let's say, this hydroxide group, and the other proton is picked up by this hydroxide group. And so these two bonds are formed.