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 N-carbamoylformamide;2-[5-[2-[5-(3,4-dichlorophenyl)furan-2-yl]ethyl]pyrazin-2-yl]ethanol is given. What is its corresponding molecular formula?
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C20H20Cl2N4O4
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