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system
Provide the molecular formula for the IUPAC named substance methyl 4-[[5-(2-amino-2-oxoethyl)-4-methyl-1,3-thiazol-2-yl]sulfanyl]-2,5-dimethylthieno[2,3-d]pyrimidine-6-carboxylate .
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C16H16N4O3S3
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