You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named ethyl 4-[4-[(1S,5R)-9-(8-bicyclo[4.3.1]decanyl)-3-oxa-9-azabicyclo[3.3.1]nonan-7-yl]-3-oxoquinoxalin-2-yl]-4-iminobutanoate by IUPAC nomenclature, provide its molecular formula.
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C31H42N4O4
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