You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-[2-(2,4-dichlorophenyl)ethyl]-3-[2,6-di(propan-2-yl)phenyl]-1-[(E)-2-methyl-3-phenylprop-2-enyl]urea by IUPAC nomenclature, provide its molecular formula.
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C31H36Cl2N2O
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