You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[[5-acetamido-3-hydroxy-2-(hydroxymethyl)oxan-4-yl]oxymethyl]-4-hydroxy-5-methoxy-3,4-dihydro-1,2-dioxine-6-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H23NO11
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