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: Anaesthesia
[{'content': 'All are amides except \nSelect and explain. \nA. Lignocaine, B. Ropivicaine, C. Bupvicaine, D. Procaine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Procaine', 'role': 'assistant'}]