This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
[{'content': 'An anaesthetic agent with boiling temperature more than 75degC is: \nSelect and explain. \nA. Ether, B. Halothane, C. Cyclopropane, D. Methoxyflurane', 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer is option4, methoxyflurane Boiling Point 105 deg C Methoxyflurane, marketed as Penthroxamong others, is an inhaled medication primarily used to reduce pain following trauma. It may also be used for sho episodes of pain as a result of medical procedures.Onset of pain relief is rapid and of a sho duration. Use is only recommended with direct medical supervision. O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. 13th Edition, Whitehouse Station, NJ: Merck and Co., Inc., 2001., p. 1073", 'role': 'assistant'}]