InChI=1S/C19H18N2O2S/c1-12-16(18(23)13-7-4-3-5-8-13)17(20-19(24)21(12)2)14-9-6-10-15(22)11-14/h3-11,17,22H,1-2H3,(H,20,24)/t17-/m1/s1