You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[4-(1,3-dihydroisoindol-2-yl)-4-oxobutyl]-1-ethyl-3-(1-propanoylpyrrolidin-3-yl)guanidine into its molecular formula.
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C22H33N5O2
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