141916-35-0 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 3-(((2-(aminocarbonyl)-5-methyl(1,2,4)triazolo(1,5-a)pyrimidin-7-yl)thio)methyl)-7-(((2-amino-4-thiazolyl)((2-(2-(3,4-dihydroxybenzoyl)hydrazino)-1,1-dimethyl-2-oxoethoxy)imino)acetyl)amino)-8-oxo-, monosodium salt, (6R-(6alpha,7beta(Z)))- Ro 41-1879 Ro-41-1879