5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-(((2-amino-4-thiazolyl)(((1,4-dihydro-1,5-dihydroxy-4-oxo-2-pyridinyl)methoxy)imino)acetyl)amino)-8-oxo-3-((1,2,3-thiadiazol-5-ylthio)methyl)-, disodium salt, (6R-(6alpha,7beta(Z)))-