You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (E)-3-[6-ethoxy-3-(3-methoxyphenyl)-1-benzofuran-5-yl]-N-(5-ethylsulfanyl-1,3,4-thiadiazol-2-yl)but-2-enamide into molecular formula.
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C25H25N3O4S2
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