You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1S,3R)-7-bromo-5,8-dimethoxy-1-methyl-3,4-dihydro-1H-isochromen-3-yl]methanol The above is the IUPAC name of a molecule. Write its molecular formula.
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C13H17BrO4
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