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 4-chloro-6-[4-[2-(2-chlorophenoxy)ethyl]piperazin-1-yl]pyrimidin-2-amine is given. What is its corresponding molecular formula?
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C16H19Cl2N5O
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