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Under IUPAC nomenclature, a molecule named (2E)-6-chloro-2-[(2E)-2-[3-[(E)-2-(7-chloro-1-ethylbenzo[cd]indol-1-ium-2-yl)ethenyl]-2-phenylcyclopent-2-en-1-ylidene]ethylidene]-1-ethylbenzo[cd]indole is given. What is its corresponding molecular formula?
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C41H33Cl2N2+
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