InChI=1/C20H16N2O3S/c1-13-19(15-5-3-2-4-6-15)16(11-26-13)20(23)22-21-10-14-7-8-17-18(9-14)25-12-24-17/h2-11H,12H2,1H3,(H,22,23)/b21-10+/f/h22H	E777E66988ECAAB4