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 9-(5,6-dihydroimidazo[2,1-a]isoquinolin-9-yloxy)-3-isocyano-5,6-dihydroimidazo[2,1-a]isoquinoline is given. What is its corresponding molecular formula?
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C23H17N5O
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