You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (1R,10S,13R)-10-ethyl-1-hydroxy-13-(4-oxoquinazolin-3-yl)-8,11-diazatetracyclo[6.6.1.02,7.011,15]pentadeca-2,4,6-triene-9,12-dione into molecular formula.
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C23H20N4O4
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