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-[[4-(4-chlorophenyl)pyrimidin-2-yl]amino]phenyl]-[4-(2,4-dimethyl-1,3-thiazole-5-carbonyl)piperazin-1-yl]methanone is given. What is its corresponding molecular formula?
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C27H25ClN6O2S
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