Pyridinium, 4-((2-carboxy-8-oxo-3-(((1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl)thio)methyl)-5-thia-1-azabicyclo(4.2.0)oct-2-en-7-yl)amino)-1-(phenylmethyl)-, hydroxide, inner salt, monosodium salt, (6R-trans)-