On the turn that the Chople Berry is going to be used up, Clefable can just use Life Orb Double-Edge Hitmonlee and have a clean OHKO since Hitmonlee isn't going to be surviving with 50 base HP, 53 base defense and a defense drop...
Clefable is faster than Granbull so it can just use Life Orb Double-Edge to kill it as well from a defense drop from Close Combat.
which is, of course, assuming you're running a Life Orb Double-Edge set...
And, of course, you cant run chople berry AND LO at the same time. :p (lol just realized this)