You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 7-amino-3-[(3S)-1-but-2-ynoylpyrrolidin-3-yl]-1-[4-(3-deuterio-2-fluorophenoxy)phenyl]-5H-pyrrolo[2,3-d]pyridazin-4-one into its molecular formula.
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C26H22FN5O3
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