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': 'Which one of the following is not a amide \nSelect and explain. \nA. Lignocaine/Lidocaine, B. Procaine, C. Bupivacaine/Mepivacaine, D. All', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Procaine', 'role': 'assistant'}]