Turn left from the place you are standing and exit the room, slightly turn to your left, you can find an opening which is to the right of the staircase, go near the opening, you are facing towards the wall right now, slightly turn to your left, you can find an opened door infront of you, enter into the room through that opened door, you can find two opened doors infront of you, enter into the room which is to your left, turn left, you can find a cabinet, stand infront of the cabinet, that would be your end point.