(2R)-2-((R)-(2-(2-aminothiazol-4-yl)acetamido)(carboxy)methyl)-5-(hydroxymethyl)-5,6-dihydro-2H-1,3-thiazine-4-carboxylic acid
(2R)-2-((R)-(2-(2-aminothiazol-4-yl)acetamido)(carboxy)methyl)-5-(hydroxymethyl)-5,6-dihydro-2H-1,3-thiazine-4-carboxylic acid