You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 1-[4-[4-(methylamino)-6-[(2S)-oxolane-2-carbonyl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-2-yl]piperidin-1-yl]ethanone into its molecular formula.
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C20H29N5O3
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