You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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1-[[1-(3-methoxyphenyl)pyrrolidin-3-yl]methyl]-2-methyl-3-(5-oxo-1-phenylpyrrolidin-3-yl)guanidine is the IUPAC name of a molecule. Please give its molecular formula.
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C24H31N5O2
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