You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 1-butyl-2-[(E,3Z)-3-(1-ethyl-5-methoxy-3,3-dimethylindol-2-ylidene)prop-1-enyl]-3,3-dimethyl-5-nitroindol-1-ium into its molecular formula.
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C30H38N3O3+
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