{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Spectroscopy and Compound Identification", "refinement": "This problem involves analyzing NMR spectra to identify the structure of an organic compound based on its molecular formula and spectral data.", "specific_scope": "The task is to determine the identity of compound X (C11H12O) by interpreting the provided 1H and 13C NMR spectra and comparing them to potential candidates.", "goal": "Identify the correct structure of compound X based on the NMR data and the given options."}, "summary": "In this problem, we are tasked with identifying the organic compound X (C11H12O) using its NMR spectral data. The 1H NMR shows distinct signals that suggest the presence of methyl groups and aromatic protons, while the 13C NMR provides information about the carbon environment. By analyzing the chemical shifts and splitting patterns, we can deduce the structure of compound X. The correct answer is 2-(4-methylstyryl)oxirane, as it matches the expected spectral characteristics and molecular formula."}