You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-N-[1-(diethylamino)propan-2-yl]-4-N-[(6-fluoro-1,2-dihydroindol-3-ylidene)methyl]-2-methylbenzene-1,4-diamine into its molecular formula.
user
C23H31FN4
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