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system
Name the molecular formula for the molecule established as [3-(5-chloro-2,4-dihydroxyphenyl)-6,7-dihydro-4H-[1,2]oxazolo[4,3-c]pyridin-5-yl]-(4-methoxyphenyl)methanone using the IUPAC nomenclature.
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C20H17ClN2O5
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