7-Amino-3-methyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-4-carboxylic acid
7-Amino-3-methyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-4-carboxylic acid ??
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7-Amino-3-methyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-4-carboxylic acid C??? ??, ??, ??
7-Amino-3-methyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-4-carboxylic acid ?? ?? ? ???
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7-Amino-3-methyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-4-carboxylic acid ?? ??
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