In this task, you will be given sentences in which your task is to recognize the name of the drug or medicine. Drugs are substances that change a person's mental or physical state. They can affect how your brain works, how you feel and behave, your understanding, and your senses. Although there might be several correct answers, you need to write one of them.

Example Input: A young patient experienced marked sinus tachycardia while smoking marijuana and receiving therapeutic doses of nortriptyline.
Example Output: nortriptyline

Example Input: In one patient, treatment with DCA was associated with a decrease in blood lactate levels from 11.2 mM before treatment to 0.8 mM 16 h later.
Example Output: DCA

Example Input: We report the development of squamous-cell carcinoma within a basal-cell epithelioma that was treated with intralesional injections of 5-FU.
Example Output:
5-FU