4R-[3[1[2S*[2S*,3R*,4(3S*,5S*)],3R*],3S*,5S*],4?,5?,6?(R*)]]-3-[[1-[2-[5-Carboxy-4-[[5-[(dimethylamino)carbonyl]-3-pyrrolidinyl]thio]-2,3-dihydro-3-methyl-1H-pyrrol-2-yl]-3-hydroxy-1-oxobutyl]-5-[(dimethylamino)carbonyl]-3-pyrrolidinyl]thio]-6-(1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic Acid;Meropenem Dimer Impurity
