You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule ethyl 7-(4-amino-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-2-carbonyl)pyrazolo[1,5-a]pyrimidine-3-carboxylate into molecular formula.
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C17H21N5O3
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