CAS No:78439-06-2||Chemical Formula:C22H22N6O7S2||Molecular Weight:546.57300||Exact Mass:546.09914||(6R,7R)-3-[(acetyloxy)methyl]-7-[[(2Z)-2-[2-[[(2Z)-2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetyl]amino]thiazol-4-yl]-2-(methoxyimino)acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid