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: Dyspnea possibly associated with controlled-release morphine sulfate tablets.
Example Output: morphine sulfate

Example Input: CONCLUSION: Acetic acid is corrosive and may cause vagina bleeding.
Example Output: Acetic acid

Example Input: Gynecomastia associated with theophylline.
Example Output:
theophylline