You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (3E)-3-[[5-[(2E)-2-(1,3-diethoxy-3-oxopropylidene)hydrazinyl]-2,4-dinitrophenyl]hydrazinylidene]-3-ethoxypropanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H28N6O10
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