You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-benzyl-N-(furan-2-ylmethyl)-2-(4-methoxyphenyl)-3,5-dioxo-1,2,4-triazine-6-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C23H20N4O5
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