7-(2-(5-amino-1,2,4-thiadiazol--3-yl)-2-cyclopentyloxyiminoacetamido)-3-(3,6-diaminoimidazo(1,2-b)pyridazinium-1-yl)methyl-3-cephem-4-carboxylate
7-(2-(5-amino-1,2,4-thiadiazol--3-yl)-2-cyclopentyloxyiminoacetamido)-3-(3,6-diaminoimidazo(1,2-b)pyridazinium-1-yl)methyl-3-cephem-4-carboxylate