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 Q]: A 52 year-old male patient diagnosed of ankylosing spondylitis presented with an iron deficiency anemia after a ten-month treatment of methotrexate.
[EX A]: methotrexate

[EX Q]: Ovarian endometrioid adenocarcinoma arising from an endometriotic cyst in a postmenopausal woman under tamoxifen therapy for breast cancer: a case report.
[EX A]: tamoxifen

[EX Q]: Multicentric hepatocellular carcinoma following phosphate diethylstilbestrol therapy for prostatic cancer.
[EX A]:
phosphate diethylstilbestrol