2. Two organic chemists, B. Tollens and von Marle, found that the reaction of acetophenone with a formaldehyde solution and ammonium chloride led to the formation of compound B. Please draw the chemical structure of compound B.
2. Two organic chemists, B. Tollens and von Marle, found that the reaction of acetophenone with a formaldehyde solution and ammonium chloride led to the formation of compound B. Please draw the chemical structure of compound B.