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:
BACKGROUND: Headaches have been reported as a potential side effect of capecitabine therapy.

Ex Output:
capecitabine


Ex Input:
Valproic acid induced coma is presented in an adult patient without a history of metabolic disease.

Ex Output:
Valproic acid


Ex Input:
It was postulated that the allergic reaction was most likely caused by capecitabine or the intermediate metabolites based on the immediate reappearance of symptoms from the rechallenge, pharmacokinetic data, and well-tolerance of fluorouracil.

Ex Output:

capecitabine