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system
Name the molecular formula for the molecule established as 5-(furan-2-yl)-2-[(1R)-1-[(5-methyl-4-prop-2-enyl-1,2,4-triazol-3-yl)sulfanyl]ethyl]-3H-thieno[2,3-d]pyrimidin-4-one using the IUPAC nomenclature.
user
C18H17N5O2S2
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