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 1,2,3,4,6,7,8,9,10,10a-decahydropyrimido[1,2-a][1,4]diazepin-2-yl 2-(9-oxoxanthen-2-yl)acetate into molecular formula.
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C23H25N3O4
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