<unk>  is a macrolide antibiotic. It is synthesized from strains of Streptomyces narbonensis var. josamyceticus var. nova
Currently sold in various countries.
Brand examples are:
Europe: Josalid,  Josacine, Iosalide, Josamina.
Russia: Wilprafen (Вильпрафен).
Japan: Josamy.
Josamycin
Meropenem
Clindamycin hydrochloride 
Plicamycin
Teicoplanin
Midecamycin
Rokitamycin
Vancomycin 