You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (Z)-3-amino-N'-[3-[(1R)-6-fluoro-2,3-dihydro-1H-inden-1-yl]imidazo[4,5-b]pyridin-5-yl]but-2-enimidamide into molecular formula.
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C19H19FN6
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