InChI=1S/C20H26N2O4S/c1-22(2)13-12-21-16-6-4-5-7-17(16)27-19(18(23)20(24)25)14-8-10-15(26-3)11-9-14/h4-11,18-19,21,23H,12-13H2,1-3H3,(H,24,25)