You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (4S,4aS,5aR,12aS)-4,7-bis(dimethylamino)-8-[[ethyl-[(3R)-oxolan-3-yl]amino]methyl]-10,12a-dihydroxy-1,3,11,12-tetraoxo-4,4a,5,5a,6,11a-hexahydrotetracene-2-carboxamide into molecular formula.
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C30H40N4O8
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