You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(4-acetylphenyl)-2-[3-(4-methylphenyl)-2,4-dioxo-[1]benzofuro[3,2-d]pyrimidin-1-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
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C27H21N3O5
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