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[(2R,3S,4S)-3-[[(3As,4R,6S,7R,7aR)-7-hydroxy-2-oxo-4-[tri(propan-2-yl)silyloxymethyl]-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-6-yl]oxy]-4-phenylmethoxy-3,4-dihydro-2H-pyran-2-yl]methyl 4-oxopentanoate


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