You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[6-(2-chloro-4-fluoroanilino)pyridin-2-yl]-3-(2-chlorophenyl)sulfanyl-6-thiophen-3-ylpiperidine-2,4-dione The above is the IUPAC name of a molecule. Write its molecular formula.
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