This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthesia, Subject name: Pharmacology
[{'content': 'Which of the following is the shoest acting competitive neuromuscular blocking agent? \nSelect and explain. \nA. Pancuronium, B. Doxacurium, C. Mivacurium, D. Vecuronium', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Mivacurium is the shoest acting non-depolarizing SMR because it is metabolized by an esterase. It can be used as an alternative to SCh for endotracheal intubation.', 'role': 'assistant'}]