(+)-1-(((6R,7R)-7-(2-(5-Amino-1,2,4-thiadiazol-3-yl)glyoxylamido)-2-carboxy-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-en-3-yl)methyl)-4-carbamoylquinuclidinium hydroxide, inner salt, 7(sup 2)-(Z)-(o-methyloxime)