You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-methyl-2-[4-[1-(3-phenoxypropanoyl)piperidine-3-carbonyl]piperazin-1-yl]butanenitrile by IUPAC nomenclature, provide its molecular formula.
user
C24H34N4O3
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