InChI=1/C18H20N2O2S/c1-12-4-6-15(7-5-12)23(21,22)20-18-10-13(2)17-11-19-9-8-16(17)14(18)3/h4-7,10-11,20H,8-9H2,1-3H3/p+1/fC18H21N2O2S/h19H/q+1 373B25FD6ECDF865