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N-[[[(2R,3R)-3-Acetamido-2-[(S)-hydroxy-(2-oxo-1,3-dioxolan-4-yl)methyl]-6-methyl-3,4-dihydro-2H-pyran-4-yl]amino]-[[hydroxy(methyl)boranyl]amino]methylidene]-methylboronamidic acid


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