{"knowledge_schema": {"broad_category": "Organic Chemistry \u2192 Spectroscopy \u2192 NMR Analysis", "refinement": "This problem involves analyzing the NMR spectra of organic compounds and understanding the splitting patterns of hydrogen atoms in a molecule based on its structure.", "specific_scope": "The focus is on determining the splitting pattern of the most deshielded hydrogen atom in compound C after a series of reactions starting from 1,3-dibromoadamantane.", "goal": "Identify the correct splitting pattern of the most deshielded hydrogen atom in the \u00b9H NMR spectrum of compound C."}, "summary": "This problem requires knowledge of organic chemistry and NMR spectroscopy to analyze the splitting patterns of hydrogen atoms in a compound. Starting from 1,3-dibromoadamantane, a series of reactions lead to compound C, and the task is to determine the splitting pattern of the most deshielded hydrogen atom in its \u00b9H NMR spectrum. The answer is a 'triplet of triplets', indicating a specific coupling pattern that arises from the molecular structure of compound C."}