IUPAC:sodium (5R,6Z)-6-({5H,6H,8H-imidazo[2,1-c][1,4]oxazin-2-yl}methylidene)-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
IUPAC:sodium (5R,6Z)-6-({5H,6H,8H-imidazo[2,1-c][1,4]oxazin-2-yl}methylidene)-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate