{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Spectroscopy", "refinement": "This problem involves the interpretation of NMR spectra to identify organic compounds based on their molecular structure and functional groups.", "specific_scope": "The task is to analyze the provided 1H and 13C NMR data to determine the structure of compound Y from a list of candidates.", "goal": "Identify the correct structure of compound Y by matching the NMR spectral data with the expected signals from the candidate compounds."}, "summary": "This problem requires understanding and interpreting NMR spectroscopy data to identify an organic compound. The provided 1H and 13C NMR spectra contain specific chemical shifts and splitting patterns that correspond to different functional groups and molecular environments. By analyzing these signals and comparing them to the candidate structures, the goal is to determine which compound matches the spectral data. In this case, the correct identification of compound Y is 2-(4-methylstyryl)oxirane."}