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system
Name the molecular formula for the molecule established as (6-chloropyrazolo[1,5-a]pyridin-2-yl)-[5-(3,5-dimethyl-1,2-oxazol-4-yl)-1-methyl-3,4-dihydro-1H-isoquinolin-2-yl]methanone using the IUPAC nomenclature.
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C23H21ClN4O2
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