You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 7-amino-N-[2-(2,5-dioxopyrrol-1-yl)ethyl]-5,12-dihydroxy-6,11-dioxo-1,2,3,4-tetrahydrotetracene-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C25H21N3O7
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