You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-[1-(3,4-dichlorophenyl)cyclobutyl]-2-(4-fluoropiperidin-1-ium-1-yl)ethanol by IUPAC nomenclature, provide its molecular formula.
user
C17H23Cl2FNO+
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