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 10a-(4-chlorophenyl)-8-fluoro-5-oxo-N-(2-phenylethyl)-3,10-dihydro-2H-imidazo[1,2-b]isoquinoline-1-carboxamide is given. What is its corresponding molecular formula?
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C26H23ClFN3O2
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