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(3Ar,5S,6R,7R,7aS)-6-amino-5-[(2R,4R,5R,6S)-5-amino-6-[(2R,4R,5R,6R)-5-amino-4,6-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-4-hydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-7,7a-dihydroxy-3a-(hydroxymethyl)-6,7-dihydro-5H-[1,3]dioxolo[4,5-b]pyran-2-one


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