It is a β -lactam antibiotic produced by Streptomyces str.Olivaceus ATCC 21379, ATCC 31126, ATCC 31365 and other strains. Other strains include str.argenteolus ATCC 11009, str.flavuvirens ATCC 3320, str.flavus ATCC 3369, str.fulvuviridus ATCC 15863, Strains such as STR.sioyaensis also produce these antibiotics. Each component has the effect of anti - gram-positive bacteria and anti - gram-negative bacteria. β -lactamase can be inhibited, and the effect is strong.