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


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