5H-Pyrazolo(1,2-a)(1,2,4)triazol-4-ium, 6-((2-carboxy-6-(1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo(3.2.0)hept-2-en-3-yl)thio)-6,7-dihydro-, hydroxide, inner salt, (4R-(4alpha,5beta,6beta(R*)))-
(1R,5S,6S)-2-[(6,7-dihydro-5H-pyrazolo[1,2-a] [1,2,4] triazolium-6-yl)]-thio-6-[(R)-1-hydroxyethyl]-1-methyl-carbapenem-3-carboxylate