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.

Ex Input:
We report 5 cases of acute reversible renal failure coinciding with the onset of treatment with captopril in patients with severe drug-resistant hypertension.

Ex Output:
captopril


Ex Input:
A 52 year-old male patient diagnosed of ankylosing spondylitis presented with an iron deficiency anemia after a ten-month treatment of methotrexate.

Ex Output:
methotrexate


Ex Input:
RESULTS: All cases developed corneal endothelial deposits after previous use of rifabutin.

Ex Output:

rifabutin