{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Spectroscopy and Compound Identification", "refinement": "This problem involves the use of spectroscopic techniques (FTIR and 1H NMR) to analyze and identify organic compounds based on their functional groups and molecular structure.", "specific_scope": "The task is to interpret the spectral data provided by FTIR and 1H NMR to determine the correct structure of an unknown compound from a list of candidates.", "goal": "Identify the correct compound from the given options based on the spectral characteristics observed."}, "summary": "In this problem, we are tasked with identifying an unknown organic compound using FTIR and 1H NMR spectroscopy. The FTIR spectrum indicates the presence of a carboxylic acid functional group (broad peak around 3000 cm-1 and a strong peak at 1700 cm-1), while the 1H NMR spectrum provides information about the hydrogen environments in the molecule. The absence of vinyl-hydrogens and the specific splitting patterns in the NMR suggest a complex structure. By analyzing the spectral data and comparing it with the provided candidates, we conclude that the compound is CH3C(H)(C2H5)C(H)(C2H5)CH2COOH."}