You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2S,3S,4S,5R,6R)-7-[(2R,3R,4R)-3,4-dihydroxy-2-(hydroxymethyl)cyclopentyl]heptane-1,2,3,4,5,6-hexol into molecular formula.
user
C13H25O9+
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