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What is the molecular formula of the compound with this IUPAC name (5R,6aR,7S,8S,10aS)-7-[2-(furan-3-yl)ethyl]-5-hydroxy-7,8-dimethyl-5,6,6a,8,9,10-hexahydro-1H-benzo[d][2]benzofuran-3-one ?
user
C20H26O4
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