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 3-(2,4-dioxo-1H-quinazolin-3-yl)-N-[2-(4-sulfamoylphenyl)ethyl]propanamide is given. What is its corresponding molecular formula?
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C19H20N4O5S
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