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 2-cyclopentyl-N-[3-(4-ethylpiperazin-1-yl)propyl]-1-oxo-3-thiophen-2-yl-3,4-dihydroisoquinoline-4-carboxamide is given. What is its corresponding molecular formula?
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C28H38N4O2S
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