You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 5-[4-([1]benzothiolo[3,2-b]carbazol-11-yl)-2-isocyanophenyl]-2-carbazol-9-yl-3-isocyanobenzonitrile into molecular formula.
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C45H23N5S
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