IUPAC:[(2S,5R)-3,3-dimethyl-4,4,7-trioxo-4lambda6-thia-1-azabicyclo[3.2.0]heptane-2-carbonyloxy]methyl 2,2-dimethylpropanoate
IUPAC:[(2S,5R)-3,3-dimethyl-4,4,7-trioxo-4lambda6-thia-1-azabicyclo[3.2.0]heptane-2-carbonyloxy]methyl 2,2-dimethylpropanoate