{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Structural Analysis", "refinement": "This problem involves analyzing spectral data (FTIR and NMR) to deduce the structure and chemical formula of an organic compound.", "specific_scope": "The focus is on a di-substituted aromatic compound with specific functional groups and hydrogen environments as indicated by the spectral data.", "goal": "Determine the correct chemical formula of the compound based on the provided spectral information and the number of hydrogen signals."}, "summary": "In this problem, we analyze the spectral data of a di-substituted aromatic compound to deduce its chemical formula. The FTIR spectrum indicates the presence of an ester group, while the 1H NMR spectrum reveals six distinct signals corresponding to different types of hydrogens. The absence of methylene signals and the presence of specific hydrogen environments suggest a particular structure. By considering the number of carbon and hydrogen atoms indicated by the spectral data, we conclude that the correct chemical formula is C11H12O2."}