You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule [4-[(1R,2S,6R,7R)-8,9-bis(4-methoxyphenyl)-3,5,10-trioxo-1,7-diphenyl-4-azatricyclo[5.2.1.02,6]dec-8-en-4-yl]-2-nitrophenyl] acetate into molecular formula.
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C43H32N2O9
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