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 1,2,3,5,6,7-hexahydro-s-indacen-4-ylurea;S-(6-methyl-5,7-dihydro-4H-thieno[2,3-c]pyridin-2-yl)thiohydroxylamine is given. What is its corresponding molecular formula?
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C21H28N4OS2
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