You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2Z)-2-[(2,5-dimethoxyphenyl)methylidene]-3-oxo-1-benzofuran-6-yl] 5-methoxy-2-phenyl-1-benzofuran-3-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C33H24O8
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