You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-[[4-(4-fluorophenyl)-4-hydroxypiperidin-1-yl]methyl]-3-phenyl-1,3-oxazolidin-2-one by IUPAC nomenclature, provide its molecular formula.
user
C21H23FN2O3
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