Keywords: Pristinamycin IIB.svg Chemical structure of pristinamycin IIB 27R -26 27-dihydro-virginiamycin M1; 27R -26 27-dihydrovirginiamycin M1; ostreogrycin G; virginiamycin M2; volpristin Own 17 40 25 October 2011 UTC Ed Edgar181 Macrolide antibiotics Oxazoles |