InChI=1/C18H20N2O3S/c19-15(18(23)20-11-16(21)22)12-24-17(13-7-3-1-4-8-13)14-9-5-2-6-10-14/h1-10,15,17H,11-12,19H2,(H,20,23)(H,21,22)/t15-/m0/s1/f/h19-20H C74A8500F18C4928