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system
Provide the molecular formula for the IUPAC named substance 3-benzyl-6-[3-(4-ethylphenyl)-1,2,4-oxadiazol-5-yl]-5-methyl-4a,7a-dihydro-1H-thieno[2,3-d]pyrimidine-2,4-dione .
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C24H22N4O3S
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