Ceftiolene

cefatiolene

Cefathiolene

(6R,7R)-7-[[(2Z)-(2-AMino-4-thiazolyl)(MethoxyiMino)acetyl]aMino]-8-oxo-3-[(1E)-2-[[1,4,5,6-tetrahydro-5,6-dioxo-4-(2-oxoethyl)-1,2,4-triazin-3-yl]thio]ethenyl]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid