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 1-(4,8-dimethoxythieno[3,2-f][1]benzofuran-2-yl)ethanol;1-(4,8-dimethoxythieno[3,2-f][1]benzofuran-2-yl)ethanone;2-(1-hydroxyethyl)thieno[3,2-f][1]benzofuran-4,8-dione is given. What is its corresponding molecular formula?
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C40H34O12S3
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