You are at the corner of the room. Move forward and take right. There will be an entrance. Once you are out of hat room, take a left, go straight until you find an open door. Pass through that door and take right. Move forward and again take a right. Pass through the portraits on the wall. Move forward, there will a wooden cupboard on your right. Cross that and take right. Now, there will be an open glass door. Enter through it, go straight. Take a right from the cabinet. You will find another entrance. Pass through it and go straight. You will find a glass door entrance. Enter through it and now take right once you entered and stand at the backside of the four chairs. That will be your destination point.