You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 3-(1,3-dioxoisoindol-2-yl)propyl-[6-[3-(5,7-dioxopyrrolo[3,4-b]pyridin-6-yl)propyl-dimethylazaniumyl]hexyl]-dimethylazanium into molecular formula.
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C31H43N5O4+2
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