(6R,7R)-7-((Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(hydroxyimino)acetamido)-8-oxo-3-((E)-((R)-2-oxo-[1,3'-bipyrrolidin]-3-ylidene)methyl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid compound with 2,2,2-trifluoroacetic acid-15ND4,Ceftobiprole Stable Isotopes