So this is carbon one, carbon one, carbon two, carbon two, and carbon three, carbon three. Now let's move on to this second step. In the second step, this basically so this molecule, this nitrogen that's lost an H shown here, basically acts as a base, takes away the H from this oxygen. And so once we take away that H, we form this intermediate. Now, this intermediate is not very stable because it contains a negative charge on the oxygen. And so that negative charge wants to go away.