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(5-Methyl-2-oxo-1,3-dioxolan-4-yl)methyl 2,2-dimethyl-3-[[2-[2-[(2-methylpropan-2-yl)oxycarbonylamino]ethoxycarbamoyl]-7-oxo-1,6-diazabicyclo[3.2.1]octan-6-yl]oxysulfonyloxy]propanoate


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