You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 4-[3-(5-chloro-2-hydroxyphenyl)-2-oxopropyl]-N-(3-phenylpropyl)pyridine-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C24H23ClN2O3
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