That night I sneak into the medical center and steal a few 'boxes' of pills. about 3 or 4 boxes of about 30 till 40 pills each. This should be enough. 

I go outside though the way I came in and go to the library. I sit down there outside and decide to take some night rest. I will read in the morning what exactly is an deadly overdose of this.

I lay down on the cold stony ground and fall asleep