{"knowledge_schema": {"broad_category": "Organic Chemistry \u2192 Spectroscopy \u2192 NMR Spectroscopy", "refinement": "This problem involves analyzing the NMR spectrum of a specific organic compound after a series of chemical reactions, focusing on the coupling patterns of hydrogen atoms in relation to neighboring groups.", "specific_scope": "The task is to determine the coupling pattern of a hydrogen atom adjacent to a ketone group in the final product after ozonolysis and reduction.", "goal": "Identify the correct coupling pattern in the 1H NMR spectrum for the specified hydrogen atom."}, "summary": "In this problem, we analyze the NMR spectrum of a product formed from a series of organic reactions, specifically focusing on the hydrogen atom adjacent to a ketone group. The coupling pattern of this hydrogen atom is crucial for understanding its environment and interactions with neighboring hydrogen atoms. The correct answer to the coupling pattern is a doublet of doublets, indicating that the hydrogen experiences coupling with two different sets of neighboring hydrogen atoms."}