This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Which does not act by blocking NMDA receptors? \nSelect and explain. \nA. Methoxetamine, B. Methadone, C. Ketamine, D. Diltiazem', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Diltiazem Drugs acting by blocking NMDA receptors are: Methoxetamine Phencyclidine Methadone Dizocilpine Felbamate Dextropropoxyphene Acamprost Tramadol Ketamine Pethidine Atomoxetine Nitrous oxide", 'role': 'assistant'}]