Right now you're facing towards a closed door. Now turn left and move towards the entrance which is in front of you. Now slightly turn left, there is an open door in front of you, move towards the open door and turn right. Now move a bit forward. There is an open entrance to your right, which is in between the portraits, move towards the entrance and turn right and enter in to the room and stand in the room facing towards the open door and it is your end point.