1H-Naphtho[2,3-c]pyran-5,10-dione,3,4-dihydro-1,3-dimethyl-, cis-(?à)-; (?à)-Demethoxyeleutherin;1H-Naphtho[2,3-c]pyran-5,10-dione, 3,4-dihydro-1,3-dimethyl-, cis-
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