Chemical Name: ethyl 7-[(1R,2R,3R)-3-hydroxy-2-[(1E,3S)-3-hydroxyoct-1-enyl]-5-oxocyclopentyl]heptanoate (as per EP)
Synonym: Cefaclor EP Impurity A ; D-Phenylglycine
Smile: CCCCC[C@]([H])(O)/C=C/[C@@]([C@@]1([H])CCCCCCC(OCC)=O)([H])[C@]([H])(O)CC1=O