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system
What is the molecular formula of the molecule (7R)-6-(2-chloro-7H-cyclopenta[b]pyridin-4-yl)-7-methyl-4-[(3R)-3-methylsulfonylpyrrolidin-1-yl]-7,8-dihydro-5H-pyrido[4,3-d]pyrimidine ?
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C21H24ClN5O2S
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