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: Pharmacology
[{'content': 'Which of the following is NOT an amide ? \nSelect and explain. \nA. Lignocaine, B. Procaine, C. Mepivacaine, D. Dibucaine', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Procaine o Local anaesthetics are either esters (aminoesters) or amides (aminoamides). A) Aminoesters :- Procaine, chloroprocaine, tetracaine (Amethocaine), benzocaine, cocaine. B) Amides (aminoamides) Lignocaine, Prilocaine, mepivacaine, bupivacaine, etidocaine, ropivacaine and dibucaine.", 'role': 'assistant'}]