You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[6-[[3,4-dihydroxy-4-(hydroxymethyl)oxolan-2-yl]oxymethyl]-3,4,5-trihydroxyoxan-2-yl]oxy-2-methylpyran-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H24O12
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