You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (4S,5R,6R)-5-acetamido-6-[(1R,2R)-2,3-dihydroxy-1-methoxypropyl]-2,4-dihydroxyoxane-2-carboxylic acid into molecular formula.
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C12H21NO9
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