You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 5-[2-[4-(4-methoxyphenyl)piperazin-1-yl]ethyl]-1,4-dimethylpyrimido[1,6-a]indole;dihydrochloride into its molecular formula.
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C26H32Cl2N4O
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