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system
Name the molecular formula for the molecule established as 2-[6,6-dimethyl-9-(4-methylphenyl)-8-oxo-7,9-dihydro-5H-[1,2,4]triazolo[5,1-b]quinazolin-4-yl]acetic acid using the IUPAC nomenclature.
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C20H22N4O3
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