(7R)-7-[(2-Amino-4-thiazolyl)(methoxyimino)acetylamino]-3-[[(5-ethenyl-4-methylthiazol-3-ium)-3-yl]methyl]cepham-3-ene-4-carboxylic acid | (7R)-7-[(2-Amino-4-thiazolyl)(methoxyimino)acetylamino]-3-[[(5-ethenyl-4-methylthiazol-3-ium)-3-yl]methyl]cepham-3-ene-4-carboxylic acid | |