InChI=1/C23H25N2O3S/c1-3-28-23-21(24-29(2,26)27)15-10-16-22(23)25(17-19-11-6-4-7-12-19)18-20-13-8-5-9-14-20/h4-16H,3,17-18H2,1-2H3/q-1 C9C7FDBCF2D4CDE4