{"knowledge_schema": {"broad_category": "Chemistry \u2192 Organic Chemistry \u2192 Stereochemistry", "refinement": "This problem involves identifying optically active compounds based on their molecular structures and stereochemistry.", "specific_scope": "The task is to analyze the given compounds for chirality, which determines their optical activity.", "goal": "Determine how many of the listed compounds are optically active by identifying chiral centers."}, "summary": "In this problem, we are tasked with identifying the number of optically active compounds from a given list. Optically active compounds are those that have chiral centers, leading to non-superimposable mirror images. By analyzing each compound for the presence of chiral centers, we can determine their optical activity. The goal is to count how many of the provided candidates are optically active."}