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: Patients with vitamin B12 deficiency are exceedingly sensitive to neurologic deterioration following nitrous oxide anesthesia.
Example Output: nitrous oxide

Example Input: Nicotinic acid-induced fulminant hepatic failure.
Example Output: Nicotinic acid

Example Input: Psoriasis induced by interferon-alpha.
Example Output:
interferon-alpha