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-(4-chlorophenyl)-3-[3-[4-[[3-[2-[(4-chlorophenyl)carbamoyl]hydrazinyl]-3-oxopropyl]amino]anilino]propanoylamino]urea by IUPAC nomenclature, provide its molecular formula.
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C26H28Cl2N8O4
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