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Name the molecular formula for the molecule established as 3-[6-(2,6-dichlorophenyl)-2-(4-morpholin-4-ylanilino)-5-oxopyrido[4,3-d]pyrimidin-8-yl]prop-2-ynylcarbamic acid using the IUPAC nomenclature.
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C27H22Cl2N6O4
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