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 7,7-dimethyl-5-(2-pyridin-2-yl-3H-thiophen-3-id-5-yl)indeno[2,1-b]carbazole;iridium into molecular formula.
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C30H21IrN2S-
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