This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Drugs (C.N.S.), Subject name: Medicine
[{'content': 'Recent oral direct thrombin inhibitor which cen be used for prevention of stroke is - \nSelect and explain. \nA. Dabigatran, B. Ximelagatron, C. Lepirudin, D. Saxagliptin', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Dabigatran", 'role': 'assistant'}]