label: 6-(1-hydroxyethyl)-2-(1-acetimidoylpyrrolidin-3-ylthio)-1-methyl-1-carbapen-2-em-3-carboxylic acid, 4R-(3(S*),4alpha,5alpha,6beta(R*))-isomer
label_lc: 6-(1-hydroxyethyl)-2-(1-acetimidoylpyrrolidin-3-ylthio)-1-methyl-1-carbapen-2-em-3-carboxylic acid, 4r-(3(s*),4alpha,5alpha,6beta(r*))-isomer