克林霉素磷酸酯杂质K
QY-KLMZ-K
2,2′-oxybis(hydroxyphosphoryl)bis[methyl7-chloro-6,7,8-trideoxy-6-[[[(2S,4R)-1-methyl-4-propylpyrrolidin-2-yl]carbonyl]amino]-1-thio-L-threo-α-D-galacto-octopyranoside]