4-(9H-fluoren-9-yl)-4-phenylbutan-2-one

4-(2,7-dibromo-9H-fluoren-9-yl)-4-phenylbutan-2-one

2,2-dimethoxy-4-phenylbut-3-en-1-ol

4-phenylbut-3-en-2-one

苯甲醛