Position play question?...What would you do?

Question

Object ball flush on the left rail 3-4 inches past the side pocket...you are going to walk the object ball up the left rail as you face it...cue ball has slight angle to object ball...next ball is back at your end rail....you can't draw back...balls in the way and you can't go forward..one ball in the way....the right side of the table is clear....only place that you can go is the opposite rail straight across from the object ball......how do you shoot this to get the cue ball back to the rail you are at?...hope my lay out is depictive enough to see the lay out....I saw this shot several years back...took notes and it came up for me and everyone jaw dropped when I executed it....how would you shoot it?