You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 4-[2-[5-(3,4,6,7,8,8a-hexahydro-1H-pyrrolo[1,2-a]pyrazine-2-carbonyl)pyridin-2-yl]-3-oxo-1H-pyrazol-4-yl]-2-fluoro-3-methylbenzonitrile by IUPAC nomenclature, provide its molecular formula.
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C24H23FN6O2
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