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What is the molecular formula of the compound with this IUPAC name (1S,4aS,7aS)-4-methoxycarbonyl-1-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-1,4a,5,7a-tetrahydrocyclopenta[c]pyran-7-carboxylic acid ?
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C17H22O11
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