You'll start in a large empty room looking at an open door. You're going to turn left and exit through the closest open door. Walk into the hallway and turn left. Proceed down the hallway. You're going to pass the first two doorways on your right. Continue walking and you're going to approach another set of open doors with a  brown door. You're going to walk right passed those, stop. Then you'll see there's another open doorway, to open doorways right after it. You're going to look left, walk into that empty office and stop.