You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 3-(6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-ylamino)-1-pyrrolidin-1-ylpropan-1-one is given. What is its corresponding molecular formula?
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C14H20N4O
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