You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[(2R)-5-[(1S)-2-[(4S)-4-(4-fluorophenyl)-4-hydroxyazepan-1-yl]-1-hydroxyethyl]-2-methyl-2,3-dihydroindol-1-yl]ethanone into its molecular formula.
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C25H31FN2O3
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