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:
Cardiac toxicity related to BCNU has not been described well.

Ex Output:
BCNU


Ex Input:
Cimetidine-induced fever.

Ex Output:
Cimetidine


Ex Input:
We describe a premenopausal woman who, while having tamoxifen due to a diagnosis of in situ ductal carcinoma, developed endometriosis requiring surgery.

Ex Output:

tamoxifen