19.Which of the following structures represents:(-3-fuoro-3-octen-2.5-dione? 20.The following molecule contains how many of unsaturation? )7B)9C)10D)11 E)15 Page6 Page 6 19. Which of the following structures represents: (Z)-3-fluoro-3-octen-2,5-dione? A) F H O O B) O H F O C) F H O O D) H F O O E) O F H O Ans: B 20. The following molecule contains how many units of unsaturation? O A) 7 B) 9 C) 10 D) 11 E) 15 Ans: D