A.1HS/11H2S2 B.2SE.HR2/4HR C.2HSPE./10HPE. D.2SE.HR2/4H3R3 E.2S3(E3)H3R323/4H3R3
A.氨茶堿 B.多索茶堿 C.孟魯司特 D.曲尼司特 E.羧甲司坦