stripped caliper slide pin

I have a 2014 dodge avenger and I was changing the brake pads and the rear caliper slide pin head stripped. Can someone tell me how to remove this caliper pin please. The pin is right next to the brake hose. It is the caliper pin at the top. Thank You

They make Screw Bolt Extractor Tools. Socket.

I can't even get a socket on it only a open end wrench and that's what stripped the bolt head That bolt is right up against the brake line that's going into the caliper.