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system
Provide the molecular formula for the IUPAC named substance (1aS,7aR)-3-hydroxy-6-[(1R)-5-hydroxy-4-oxo-2,3-dihydro-1H-naphthalen-1-yl]-1a,7a-dihydronaphtho[2,3-b]oxirene-2,7-dione .
user
C20H14O6
assistant