This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal tract, Subject name: Pharmacology
[{'content': 'Which of the following is not an inducer of CYP3A4 \nSelect and explain. \nA. Barbiturates, B. Glucocoicoids, C. Phenytoin, D. Erythromycin', 'role': 'user'}, {'content': "Answer: D \nExplanation: Inducer of CYP3A4 areBarbiturates,carbamazepine,glucocoicoids,pioglitazone, phenytoin,rifampin, St. John's wo", 'role': 'assistant'}]