And we cleave the C four into C four a and C four B. Now, C two A and C four A basically diffuse away. They swim away while C two B and C four B create a non covalent bond and they form a complex known as C four B C two B complex. And what this complex does is it goes on to activate two other proteins, as we'll see in just a moment. One of the proteins is known as C Three. And that's exactly why sometimes the C four B C two B complex is known as the C Three convertes.