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 (4S)-4,7-bis(dimethylamino)-1,10,11,12a-tetrahydroxy-9-nitro-3,12-dioxo-4a,5,5a,6-tetrahydro-4H-tetracene-2-carboxamide;sulfuric acid is given. What is its corresponding molecular formula?
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C23H28N4O13S
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