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: We describe the first documented case of azathioprine-induced severe myelosuppression due to thiopurine methyltransferase deficiency in autoimmune liver disease.
Example Output: azathioprine

Example Input: Widespread cutaneous vasculitis associated with diltiazem.
Example Output: diltiazem

Example Input: Paraplegia following intrathecal cytosine arabinoside.
Example Output:
cytosine arabinoside