Poor coupe
It's fixable, but you'll be paying for it. I can see the suspension was moved slightly by the buckling of the body skin forward of the rear wheel. I'm sure a good frame shop can pull the unibody back out. They hit you in the weakest part of the rear: direct center. I would take the car to a frame shop and let them tell you how expensive it'll be, or if they feel confident they can do it.
But to give you some hope, a friend of mine was rear ended in his MX-6 on an interstate off-ramp. Accordioned the rear of the car up to the rear glass. A shop was able to pull it out and he auto-crosses the piss out of it still.