You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (8S)-8-(4-chlorophenyl)-11-(4-nitrophenyl)-2,6-dithia-4,11-diazatricyclo[7.3.0.03,7]dodec-3(7)-ene-5,10,12-trione is given. What is its corresponding molecular formula?
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C20H12ClN3O5S2
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