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system
Name the molecular formula for the molecule established as (3S,4R)-1-[2-[3-(1H-benzimidazol-2-yl)azetidin-1-yl]pyrimidin-4-yl]-4-methoxy-N,N-dimethylpyrrolidin-3-amine using the IUPAC nomenclature.
user
C21H27N7O
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