Clavulanate Potassium EP Impurity E

Chemical Name: (2R,4R,5Z)-2-(carboxymethyl)-5-(2-hydroxyethylidene)-3-[[(2R,3Z,5R)-3-(2-hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]hept-2-yl]carbonyl]oxazolidine-4-carboxylic acid

Smile: [H][C@@](N1[C@](C(N2[C@](C(O)=O)([H])O/C([C@]2([H])C(O)=O)=C\CO)=O)([H])/C3=C/CO)(O3)CC1=O