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Under IUPAC nomenclature, a molecule named 3-[1-ethyl-4-(8-ethyl-4-pyridin-3-yl-5,8,10-triazatricyclo[7.4.0.02,7]trideca-1(9),2,4,6,10,12-hexaen-12-yl)pyrazol-1-ium-1-yl]propan-1-amine is given. What is its corresponding molecular formula?
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C25H28N7+
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