You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[3-[benzyl-[2-(dimethylamino)ethyl]amino]-3-oxopropyl]-N-(3-methylbutyl)pyrazine-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C24H35N5O2
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