You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 4,7-difluoro-2,3,4,4a,6,6a,7,8,9,10,10a,10b-dodecahydro-1H-benzo[c]chromene-3,8-diol into molecular formula.
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C13H20F2O3
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