This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Local and Regional Anesthesia), Subject name: Anaesthesia
[{'content': 'All are amides EXCEPT: \nSelect and explain. \nA. Lignocaine, B. Procaine, C. Prilocaine, D. Etidocaine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ANSWER: (B) ProcaineREF: KDT 4th edition page 161Amide linked LA(Mnemonic = two "I" in the spelling)Ester linked LA(Mnemonic= one "I" in the spelling)Lignocaine (Lidocaine/xylocaine)BupivacaineDibucainePrilocaineRopivacaineCocaineProcaineChlorprocaineTetracaineBenzocaine', 'role': 'assistant'}]