苄星青霉素

biàn xīng qīng méi sù

(pharmacology) benzathine benzylpenicillin (aka benzathine penicillin G)

biàn

benzyl (chemistry)

xīng

star

qīng

abbr. for 青海[Qing1 hai3], Qinghai Province

méi

variant of 霉[mei2]

raw silk