You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name methyl 2-[(1R,4R,7R)-7-(bromomethyl)-4,7-dimethyl-3-oxo-2-bicyclo[2.2.1]heptanylidene]-2-hydroxyacetate into its molecular formula.
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C13H17BrO4
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