2,3,11,12-Tetramethoxy-7,7-dimethyl-7,8-dihydro-6H-quino(2,3,4-kl)acridine;6H-Quino(2,3,4-kl)acridine, 7,8-dihydro-2,3,11,12-tetramethoxy-7,7-dimethyl-
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