Biapenem

Chemical Name: (4R,5S,6S)-3-((6,7-dihydro-5H-pyrazolo[1,2-a][1,2,4]triazol-4-ium-6-yl)thio)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate

Smile: [O-]C(C1=C(SC2C[N+]3=CN=CN3C2)[C@H](C)[C@]([H])([C@]4([C@H](O)C)[H])N1C4=O)=O