0
Cocaine.
C8H15N
Atropine is a tropane alkaloid extracted from the deadly nightshade (Atropa belladonna) and other plants of the family Solanaceae
No, codeine is an analgesic opiate pro-drug for pain. Cocaine is a crystalline tropane alkaloid sold as a street drug.
Crack cocaine is a stimulant. Chemically, it is in a class known as the tropane alkaloids, because the the ring system it contains.