(R)-2-((R)-((E)-2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetamido)(carboxy)methyl)-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid
(R)-2-((R)-((E)-2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetamido)(carboxy)methyl)-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid