You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 8-[(2,4-dimethylazetidin-2-yl)methoxy]-5H-chromeno[3,4-c]pyridin-2-amine;ethane by IUPAC nomenclature, provide its molecular formula.
user
C20H27N3O2
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