Slightly turn left and move forward. From here, slightly turn left and exit the room. Right now, you're facing towards a door. Slightly turn left and take few steps. From here, turn slightly right and walk in the passage till you reach a closed door on the left side. Slightly turn right and move towards the caution board which is in front of you. Now, turn right and you can see an opened door. Move towards that opened door and walk straight till you reach a large portrait in front of you and that is the end point.