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system
Name the molecular formula for the molecule established as [4-[6-(2-methylimidazol-1-yl)pyrimidin-4-yl]piperazin-1-yl]-(4,5,6,7-tetrahydro-1,2-benzoxazol-3-yl)methanone using the IUPAC nomenclature.
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C20H23N7O2
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