InChI=1/C21H17N5O2/c1-26(2)21-24-16-15-13-5-3-4-6-14(13)22-20(15)23-18(17(16)25-21)19(28)11-7-9-12(27)10-8-11/h3-10,27H,1-2H3,(H,22,23)(H,24,25 [2-(dimethylamino)-3,6-dihydroimidazo[4',5':4,5]pyrido[2,3-b]indol-4-yl](4-hydroxyphenyl)methanone methanone, [2-(dimethylamino)-3,6-dihydroimidazo[4',5':4,5]pyrido[2,3-b]indol-4-yl](4-hydroxyphenyl)-