This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
[{'content': 'Oxytocin antagonist is - \nSelect and explain. \nA. Nitrates, B. Sultraban, C. Atosiban, D. Rimonabant', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Atosiban o Atosiban is a peptide analogue of oxytocin that acts as antagonist at oxytocin receptors.o It has been found to suppress premature uterine contractions and postpone preterm delivery with fewer cardiovascular and metabolic complications than beta 2 adrenergic agonists.", 'role': 'assistant'}]