You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (5R,6S,7S)-5,6-difluoro-4-(3-fluorocyclobutyl)oxy-1-methylsulfonyl-6,7-dihydro-5H-cyclopenta[c]pyridin-7-ol into molecular formula.
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C13H14F3NO4S
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