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: Forensic Medicine
[{'content': 'Not an organophosphate: AFMC 12 \nSelect and explain. \nA. Diazinon, B. Endrin, C. Malathion, D. Parathion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Endrin', 'role': 'assistant'}]