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: Regression of thyrotoxic ophthalmopathy following lithium withdrawal.
Example Output: lithium

Example Input: We report a patient with advanced colonic carcinoma who was treated with concomitant chemoirradiation with oxaliplatin and developed a peculiar dermnatitis in the irradiated field after being exposed to subsequent chemotherapy with oxaliplatin.
Example Output: oxaliplatin

Example Input: This is the first description, to our knowledge, of ductopenia apparently caused by clindamycin.
Example Output:
clindamycin