7-(alpha-(2-aminomethylphenyl)acetamido)-3-((1-carboxymethyltetrazol-5-ylthio)methyl)-3-cephem-4-carboxylic acid
7-[O-(aminomethyl)phenylacetamido]-3-[[[1-(carboxymethyl)-1H-tetrazol-5-yl]thio]methyl]-3-cephem-4-carboxylic acid