(7R)-7-[(2-Amino-4-thiazolyl)(methoxyimino)acetylamino]-3-[4-hydroxymethylpyridinium-1-ylmethyl]cepham-3-ene-4-carboxylic acid | (7R)-7-[(2-Amino-4-thiazolyl)(methoxyimino)acetylamino]-3-[4-hydroxymethylpyridinium-1-ylmethyl]cepham-3-ene-4-carboxylic acid | |