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system
Provide the molecular formula for the IUPAC named substance [(7R)-7-acetamido-1,2,3-trimethoxy-10-methylsulfanyl-9-oxo-6,7-dihydro-5H-benzo[a]heptalen-4-yl]methyl 4-(nitrooxymethyl)benzoate .
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C31H32N2O10S
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