You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 1-[1-[5,6-bis(4-chlorophenyl)pyrazin-2-yl]oxy-2-methylpropan-2-yl]-3-tert-butylurea is given. What is its corresponding molecular formula?
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C25H28Cl2N4O2
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