2-Indolinone,3-[2-(5-hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene]- (7CI,8CI);2H-Indol-2-one,3-[1,2-dihydro-5-(5-hydroxy-1H-indol-3-yl)-2-oxo-3H-pyrrol-3-ylidene]-1,3-dihydro-,(E)-; Oxindole, 3-[2-(5-hydroxyindol-3-yl)-5-oxo-2-pyrrolin-4-ylidene]- (6CI);Violacein
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