(6R-trans)-7-((((1-Imino-2-phenylethyl)amino)acetyl)amino)-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid 40158-24-5 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((((1-imino-2-phenylethyl)amino)acetyl)amino)-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-, (6R-trans)- Antibiotic BL-S 339 BL-S 339