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:
The fever abated promptly following discontinuation of acyclovir, and radiographic abnormalities resolved over ten days.

Ex Output:
acyclovir


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

Ex Output:
rifabutin


Ex Input:
Albeit rare among Western patients, such lithium-associated thyroid dysfunctions appeared to be more likely to occur in Hong Kong Chinese.

Ex Output:

lithium