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system
Name the molecular formula for the molecule established as (4aR,5aR,12aR)-2-acetyl-10,12a-dihydroxy-4a,5a-dimethyl-7-(4-methylcyclopenta-1,3-dien-1-yl)-4-propan-2-yl-4,5,6,11a-tetrahydrotetracene-1,3,11,12-tetrone using the IUPAC nomenclature.
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C31H34O7
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