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What is the molecular formula of the molecule 1,3-dimethyl-6-[2-[4-(methyl-methylidene-oxo-lambda6-sulfanyl)phenyl]-2-oxoethyl]sulfanyl-4-sulfanylidene-5H-pyrrolo[2,3-d]pyrimidin-2-one ?
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C18H19N3O3S3
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