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system
What is the molecular formula of the molecule identified by 5-[(4,6-dimethylpyrimidin-2-yl)sulfanylmethyl]-3-(4-methoxyphenyl)-2-methyl-2,3,3a,4-tetrahydro-1H-pyrazolo[1,5-a]pyrimidin-7-one ?
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C21H25N5O2S
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