题目麻黄碱活性最高的异构体是()A. (-)1R,2SB. ( )1R,2RC. (+1S,2RD. (+1S,2SE. 外消旋体麻黄碱活性最高的异构体是()A. (-)1R,2SB. ( )1R,2RC. (+1S,2RD. (+1S,2SE. 外消旋体题目解答答案A. (-)1R,2S