(6R,7R)-3-(acetoxymethyl)-7-(2-((N,N'-diisopropylcarbamimidoyl)thio)acetamido)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid; (6R-trans)-3-[(Acetyloxy)methyl]-7-[[[[[(1-methylethyl)amino][(1-methylethyl)imino]methyl]thio]acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid; 7-[2-[(N,N'-diisopropylamidino)thio]acetamido]-3-(hydroxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid; 6R,7R)-3-[(Acetyloxy)methyl]-7-[[2-[[[(1-methylethyl)amino][(1-methylethyl)imino]methyl]thio]acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
