5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-(((((4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl)amino)(4-hydroxyphenyl)acetyl)amino)-3-(((1-methyl-1H-1,3,4-triazol-5-yl)thio)methyl)-8-oxo-, (6R-(6-alpha,7-beta(R*)))- 77656-86-1