You can do it in two tries. Sneak (I had 40) to the right hand corner, wait till rapt walking away, sneak to tubes and pop all three canisters in, then run like heck back to the door and leap through and shut it. Crouch and wait for them to calm down, then open door and sneak back to left hand corner, wait till rapt walking away, sneak to terminal and gas the suckers. All good. There's a bin with Level 50 lockpick needed, and also a door way over on the right side of the complex also 50 Lockpick needed. Good stuff behind both.
