克林霉素磷酸酯杂质G
QY-KLMZ-G
(2S,4R)-N-((1R,2R)-1-((1R,5R,6R,8R,9S)-3,9-dihydroxy-8-(methylthio)-3-oxido-2,4,7-trioxa-3-phosphabicyclo[3.3.1]nonan-6-yl)-2-hydroxypropyl)-1-methyl-4-propylpyrrolidine-2-carboxamide