* Prepare the solution.
* Use or place the items as numbered (1-11).
* Take the ANTIDOTE (L).
* Back out.
* Give the ANTIDOTE to Clarice; receive CLARICE'S ROOM KEY (M).
* Use CLARICE'S ROOM KEY on the lock; turn the key and the handle to trigger a HOP (N).
* Play the HOP.
* You receive a MEDALLION (O).
* Go left.