InChI=1S/C19H22N2O3S/c1-20-11-12-21-15-5-3-4-6-16(15)25-18(17(22)19(21)23)13-7-9-14(24-2)10-8-13/h3-10,17-18,20,22H,11-12H2,1-2H3/t17-,18+/m1/s1