10H-phenothiazine-10-propanenitrile, 5,5-dioxide 3-(5,5-dioxido-10H-phenothiazin-10-yl)propanenitrile InChI=1/C15H12N2O2S/c16-10-5-11-17-12-6-1-3-8-14(12)20(18,19)15-9-4-2-7-13(15)17/h1-4,6-9H,5,11H