2,5-HEPTADIEN-4-ONE, 1,7-BIS(1,3-DIHYDRO-1,3,3-TRIMETHYL-2H-INDOL-2-YLIDENE)-;(2E,5E)-1,7-BIS(1,3,3-TRIMETHYL-1,3-DIHYDRO-2H-INDOL-2-YLIDENE)-2,5-HEPTADIEN-4-ONE
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