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system
Provide the molecular formula for the IUPAC named substance (1S,10S)-2-oxo-5-(pyridin-4-ylsulfanylmethyl)-7-oxa-3,9-diazatricyclo[4.3.1.03,10]dec-4-ene-4,9-dicarboxylic acid .
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C15H13N3O6S
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