This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autacoids, Subject name: Pharmacology
[{'content': 'Which of the following drugs has covalent interaction with its target \nSelect and explain. \nA. Aspirin, B. Penicillin, C. Nitric oxide, D. Bosentan', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Aspirin is Acetylsalicylic acid conves to salicylic acid in the body, responsible for the action. It acts irreversibly by binding to cox enzyme through covalent- strong bonds ESSENTIALS OF MEDICAL PHARMACOLOGY;7TH EDITION; KD TRIPATHI;PAGE NO 195', 'role': 'assistant'}]