You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-[(3R)-3-aminopyrrolidin-1-yl]-N-ethyl-5,6-dimethyl-N-[(4-methylphenyl)methyl]pyrimidine-2-carboxamide into its molecular formula.
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C21H29N5O
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