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:
When the disease recurred conventional amphotericin B was used again, but had to be stopped because of severe side effects.

Ex Output:
amphotericin B


Ex Input:
There have been many reports of probable lithium-induced organic brain syndromes occurring when serum lithium levels are within or close to the therapeutic range.

Ex Output:
lithium


Ex Input:
The 3-week sulphasalazine syndrome strikes again.

Ex Output:

sulphasalazine