Cefdinir Impurity 1

Chemical Name: (αR,2S,5R)-α-[[(2Z)-2-(2-Amino-4-thiazolyl)-2-(hydroxyimino)acetyl]amino]-1,2,5,7-tetrahydro-5-methyl-7-oxo-4H-furo[3,4-d][1,3]thiazine-2-acetic acid 

Smile: O=C(OC1C)C2=C1CS[C@@]([C@@H](C(O)=O)NC(/C(C3=CSC(N)=N3)=N\O)=O)([H])N2