(6R,7S)-7-({(2R)-2-{[(4-Ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino}-2-[4-hydroxy(~2~H_4_)phenyl]acetyl}amino)-3-{[(1-methyl-1H-tetrazol-5-yl)sulfanyl]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en e-2-carboxylic acid

(6R,7S)-7-({(2R)-2-{[(4-Ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino}-2-[4-hydroxy(~2~H_4_)phenyl]acetyl}amino)-3-{[(1-methyl-1H-tetrazol-5-yl)sulfanyl]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en -2-carbonsäure

(6R,7S)-7-({(2R)-2-{[(4-Ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino}-2-[4-hydroxy(~2~H_4_)phenyl]acetyl}amino)-3-{[(1-methyl-1H-tetrazol-5-yl)sulfanyl]methyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en e-2-carboxylic acid

5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[(2R)-2-[[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]-2-(4-hydroxyphenyl-2,3,5,6-d_4_)acetyl]amino]-3-[[(1-methyl-1H-tetrazol-5-yl)thio]m ethyl]-8-oxo-, (6R,7S)-

Acide (6R,7S)-7-({(2R)-2-{[(4-éthyl-2,3-dioxo-1-pipérazinyl)carbonyl]amino}-2-[4-hydroxy(~2~H_4_)phényl]acétyl}amino)-3-{[(1-méthyl-1H-tétrazol-5-yl)sulfanyl]méthyl}-8-oxo-5-thia-1-azabicyclo[4.2.0]oc t-2-ène-2-carboxylique