下列结构具有抗寄生虫药理活性的是

A、[img=~/QImg/Tiles/YA55_56_113_
A、gif]
B、[img=~/QImg/Tiles/YA55_56_113_
B、gif]
C、[img=~/QImg/Tiles/YA55_56_113_
C、gif]
D、[img=~/QImg/Tiles/YA55_56_113_
D、gif]
E、[img=~/QImg/Tiles/YA55_56_113_
E、gif]