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: PURPOSE: To describe bilateral optic neuritis that occurred as an adverse effect of recombinant and natural interferon alpha administration.
Example Output: interferon alpha

Example Input: Erythropoietin is beneficial in mitomycin-induced hemolytic-uremic syndrome.
Example Output: mitomycin

Example Input: We describe a case of subcutaneous metastasis along the needle track after percutaneous ethanol injection (PEI) for treatment of hepatocellular carcinoma.
Example Output:
ethanol