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What is the molecular formula of the compound with this IUPAC name 4-(dimethylamino)-5,10,12a-trihydroxy-6-methyl-1,3,11,12-tetraoxo-7-pyridin-2-yl-4,4a,5,5a,6,11a-hexahydrotetracene-2-carboxamide ?
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C27H27N3O8
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