2-(((1e)-1-(4-hydroxy-2-oxo-1-phenyl-1,2-dihydroquinolin-3-yl)ethylidene)amino)anthra-9,10-quinone (en)9,10-anthracenedione, 2-[[1-(1,2-dihydro-4-hydroxy-2-oxo-1-phenyl-3-quinolinyl)ethylidene]amino]- (en)