You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (4S,12aS)-4-(dimethylamino)-9-[[2-(dimethylamino)-2-phenylacetyl]amino]-5,10,12a-trihydroxy-6-methyl-1,3,11,12-tetraoxo-4,4a,5,5a,6,11a-hexahydrotetracene-2-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C32H36N4O9
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