1-(10-(3-(Dimethylamino)propyl)phenothiazin-2-yl)-1-butanone maleate 1-BUTANONE, 1-(10-(3-(DIMETHYLAMINO)PROPYL)PHENOTHIAZIN-2-YL)-, MALEATE 1-Butanone, 1-(10-(3-(dimethylamino)propyl)-10H-phenothiazin-2-yl)-, (Z)-2-butenedioate