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: Venlafaxine-induced urinary incontinence resolved after switching to sertraline.
Example Output: Venlafaxine

Example Input: We describe a 41 yr old leprosy patient treated for 10 yrs with clofazimine who underwent laparotomy for severe abdominal pain.
Example Output: clofazimine

Example Input: Fixed drug eruption of the scrotum due to methylphenidate.
Example Output:
methylphenidate