{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 NMR Spectroscopy", "refinement": "This problem involves interpreting NMR spectra to deduce structural information about organic compounds, specifically focusing on the connectivity of protons in a molecule.", "specific_scope": "The task is to analyze the 2D NOESY NMR spectra of two products derived from a reaction involving a dicarboxylic acid anhydride and a cyclopentadiene derivative, identifying which resonances are connected in the major product.", "goal": "Determine the specific proton resonances in the major product that are connected by a cross-peak in the NOESY spectrum."}, "summary": "This problem requires understanding NMR spectroscopy, particularly 2D NOESY, to analyze the connectivity of protons in organic compounds. The scenario describes the reaction of a dicarboxylic acid anhydride with a cyclopentadiene derivative, yielding two products with the same molecular formula. The goal is to identify which two proton resonances in the major product are connected by a cross-peak in the NOESY spectrum, indicating spatial proximity. The options provided represent different combinations of proton resonances, and careful consideration of the chemical shifts and integrals will lead to the correct answer."}