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-[5-(4-amino-7-methyl-6,7-dihydropyrazolo[1,5-c]pyrimidin-5-yl)-2,3-dihydroindol-1-yl]-2-(2,3-difluorophenyl)ethanone is given. What is its corresponding molecular formula?
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C23H21F2N5O
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