You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-[[[2-(5-chloro-5,6-dihydro-1H-pyrrolo[2,3-b]pyridin-3-yl)-5-fluoropyrimidin-4-yl]amino]methyl]-N-[2-(1H-imidazol-5-yl)ethyl]piperidine-1-carbohydrazide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H28ClFN10O
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