You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3,3-difluoro-1-[1-(furan-3-ylsulfonyl)piperidin-4-yl]cyclobutane-1-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C14H17F2NO5S
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