You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-benzyl-1-[[1-[2-(4-benzyl-3-butyl-2-iminoimidazolidin-1-yl)propyl]pyrrolidin-2-yl]methyl]-4,5-dihydroimidazol-2-amine by IUPAC nomenclature, provide its molecular formula.
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C32H47N7
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