Sodium; (2S,3S)-3-{2-[5-chloro-2-(2-chloro-acetylamino)-thiazol-4-yl]-2-[(Z)-methoxyimino]-acetylamino}-2-methoxycarbonyl-4-oxo-azetidine-1-sulfonate

sodium cis-3-<2-(2-aminothiazol-4-yl)-(Z)-2-(n-butoxyimino)acetamido>-4-methoxycarbonyl-2-azetidinone-1-sulfonate