You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[5-chloro-2-[4-(3-methylbutanoyl)piperazin-1-yl]phenyl]-2-(2,4-dichloro-6-methylphenoxy)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H28Cl3N3O3
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