How do I get the body out of the Inner Sanctum

Hint 1 of 5:

You are too weak to carry the body; you need a cart.

Hint 2 of 5:

Get the cart from the dumbwaiter before coming into the Trustee Room.

Hint 3 of 5:

It is always kept in the elevator. PRESS BUTTON if necessary.

Hint 4 of 5:

PUSH CART NORTH.  When in Inner Sanctum, PUT BODY ON CART.

Hint 5 of 5:

Get his portrait ( on the wall ) too.