You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(6,8-dimethoxy-1-methyl-3,4-dihydro-2H-naphthalen-1-yl)methyl]-5,7-dimethoxy-1,2-dihydronaphthalene is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H32O4
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