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11-Hydroxy-4-methyl-6H,13H-naphtho[2',3':4,5]pyrano[3,2-c][1]benzopyran-7,12,13-trione Structure

11-Hydroxy-4-methyl-6H,13H-naphtho[2',3':4,5]pyrano[3,2-c][1]benzopyran-7,12,13-trione