InChI=1/C16H15N2O2S/c1-20-14-7-8-15(19)13(10-14)11-17-18-16(21)9-12-5-3-2-4-6-12/h2-11,19H,1H3,(H,18,21)/q-1/b17-11+/f/h18H/b17-11+,18-16- A24AFE506F660AF5