for the following products
7-Amino-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)cephalosporanic acid | 7-Amino-3-[(5-methyl-1,3,4-thiadiazol-2-ylthio)methyl]-3-cephem-4-carboxylic acid and (6R,7R)-7-Amino-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
