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-(3,4-dihydro-2H-chromen-8-yl)-3-[2-(4-hydroxy-3-methoxyphenyl)ethyl]urea is given. What is its corresponding molecular formula?
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C19H22N2O4
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