{"knowledge_schema": {"broad_category": "Chemistry \u2192 Stereochemistry \u2192 Meso Compounds", "refinement": "This problem involves identifying a meso compound among a set of stereoisomers based on their configurations and symmetry.", "specific_scope": "The focus is on the specific compounds listed, which are stereoisomers of 2,3-dibromobutane and 2-butanol, and determining which one exhibits internal symmetry that qualifies it as meso.", "goal": "Identify the compound that is meso, meaning it has multiple stereocenters but is superimposable on its mirror image due to an internal plane of symmetry."}, "summary": "This problem is centered on stereochemistry, specifically the identification of meso compounds among given candidates. A meso compound has multiple stereocenters but possesses an internal plane of symmetry, making it superimposable on its mirror image. In this case, the correct answer is (2R,3S)-2,3-dibromobutane, which exhibits this symmetry, distinguishing it from the other candidates that do not meet the criteria for being meso."}