InChI=1/C20H20N2O2S/c23-18-9-5-4-6-15(18)12-13-21-19(24)11-10-17-14-25-20(22-17)16-7-2-1-3-8-16/h1-9,14,23H,10-13H2,(H,21,24)/f/h21H 2FA8E2CFE0CA9DA3