You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[2-[(2S,5S,6R)-5-(benzylsulfonylamino)-6-(hydroxymethyl)oxan-2-yl]ethyl]oxane-4-carboxamide into its molecular formula.
user
C21H32N2O6S
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