You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-[[1-[4-(5-methyl-2-propan-2-ylphenoxy)butyl]benzimidazol-2-yl]methyl]-3-phenylpropanamide into molecular formula.
user
C31H37N3O2
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