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[(3Ar,4R,6S,7S,7aR)-4-[[(3aR,4S,6R,7S,7aR)-3-acetyl-4-methoxy-2-oxo-6-(phenylmethoxymethyl)-4,6,7,7a-tetrahydro-3aH-pyrano[3,4-d][1,3]oxazol-7-yl]oxy]-6-methyl-2-oxo-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-7-yl] benzoate


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