<unk>  is a macrolide antibiotic. It is synthesized from strains of Streptomyces antibioticus. It is weaker than erythromycin.
It used to be sold under the brand name Sigmamycine, combined with tetracycline, and  made by the company Rosa-Phytopharma in France.
Oleandomycin
Troleandomycin
Desaspidin
Penimepicycline
Lentinan
Ramoplanin
Proscillaridin
Cerivastatin