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 2-[(5-nitrothiophene-2-carbonyl)amino]-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-3-carboxamide is given. What is its corresponding molecular formula?
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C15H15N3O4S2
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