Smack, a drug that acts as a depressant and slows down body functions, is chemically obtained by the acetylation of a compound extracted from the latex of:

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Smack, also known as heroin, is chemically diacetylmorphine. It is obtained by the acetylation of morphine. Morphine is extracted from the latex of the poppy plant, Papaver somniferum . Therefore, the compound is extracted from the latex of Papaver somniferum . Answer: Papaver somniferum