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?? ???? >(4S,5β)-6β-[(R)-1-Hydroxyethyl]-4α-methyl-3-[(1-ethyl-pyridinium 4-yl)thiomethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
(4S,5β)-6β-[(R)-1-Hydroxyethyl]-4α-methyl-3-[(1-ethyl-pyridinium 4-yl)thiomethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
(4S,5β)-6β-[(R)-1-Hydroxyethyl]-4α-methyl-3-[(1-ethyl-pyridinium 4-yl)thiomethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate ??
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(4S,5β)-6β-[(R)-1-Hydroxyethyl]-4α-methyl-3-[(1-ethyl-pyridinium 4-yl)thiomethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate C??? ??, ??, ??
(4S,5β)-6β-[(R)-1-Hydroxyethyl]-4α-methyl-3-[(1-ethyl-pyridinium 4-yl)thiomethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate ?? ?? ? ???
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(4S,5β)-6β-[(R)-1-Hydroxyethyl]-4α-methyl-3-[(1-ethyl-pyridinium 4-yl)thiomethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate ?? ??
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