Unfortunately it's double hinged, so the point you'd need to pull down from to get proper leverage on it is at or near the highest point - hang a rope down ther

Unfortunately it's double hinged, so the point you'd need to pull down from to get proper leverage on it is at or near the highest point - hang a rope down there that's of useful length and it's by definition longer than half the length of the cabinet, and doesn't fold neatly in. Maybe there's a different solution though, I'm not sure