You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-(4-phenylphenyl)-N-spiro[benzo[b]fluorene-11,9'-thioxanthene]-5-ylspiro[fluorene-9,9'-xanthene]-4-amine;N-(4-phenylphenyl)-N-spiro[fluorene-9,9'-xanthene]-4-ylspiro[benzo[b]fluorene-11,9'-xanthene]-9-amine into molecular formula.
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C132H82N2O3S
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