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What is the molecular formula of the molecule identified by 5-hydroxy-3-(2-methoxyethyl)-1-methyl-4,6-dioxo-N-(4-pyridin-4-yl-1,3-thiazol-2-yl)-4a,5-dihydro-2H-pyrido[2,1-f][1,2,4]triazine-7-carboxamide ?
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C20H22N6O5S
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