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.

Q: Pneumocystis carinii pneumonia as a complication of methotrexate treatment of asthma.

A: methotrexate
****
Q: A 77-year-old woman with no history of epilepsy presented a probable nonconvulsive status epilepticus while receiving continuous intravenous morphine for back pain relating to vertebral metastasis of a malignant lymphoma.

A: morphine
****
Q: Supravenous hyperpigmentation in association with CHOP chemotherapy of a CD30 (Ki-1)-positive anaplastic large-cell lymphoma.

A:
CHOP
****