You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-[(E)-3-(3,4-dichlorophenyl)prop-2-enoyl]-4-[4-(4-fluoro-3-hydroxypiperidin-1-yl)butyl]-1,4-diazepan-5-one by IUPAC nomenclature, provide its molecular formula.
user
C23H30Cl2FN3O3
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