You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 2-[4-(4-butylphenyl)sulfonylpiperazin-1-yl]-7-(2,5-dichlorophenyl)-[1,2,4]triazolo[1,5-a]pyrimidine into molecular formula.
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C25H26Cl2N6O2S
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