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: Biochemistry
[{'content': 'All the following are peptide based except ? \nSelect and explain. \nA. ACTH, B. GnRH, C. Thyroxin, D. TRH', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Thyroxin", 'role': 'assistant'}]