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What is the molecular formula of the compound with this IUPAC name tert-butyl 4-[2-[6-(2,6-dichloro-3,5-dimethoxyphenyl)-2-methylsulfonyl-7-oxopyrido[2,3-d]pyrimidin-8-yl]ethyl]piperazine-1-carboxylate ?
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C27H33Cl2N5O7S
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