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 N'-[5-ethyl-5-methyl-4-oxo-3-(2-phenylethyl)-6H-benzo[h]quinazolin-2-yl]-2-phenylacetohydrazide into molecular formula.
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C31H32N4O2
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