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 78-year-old man with a transvenous cardioverter defibrillator system developed frequent shocks during oral procainamide therapy.
Example Output: procainamide

Example Input: Cessation of D-Pen and the start of corticosteroid therapy were followed by recovery from bicytopenia.
Example Output: D-Pen

Example Input: Avascular necrosis of the femoral head in patients with prostate cancer treated with cyproterone acetate and radiotherapy.
Example Output:
cyproterone acetate