You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (2S)-2-[(3S,4E)-4-[2-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1H-2-benzofuran-5-yl)ethylidene]oxan-3-yl]propanoic acid is given. What is its corresponding molecular formula?
user
C20H24O7
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