InChI=1S/C23H31N3O6S/c1-24-21(28)11-12-22(29)25-19(14-17-6-3-2-4-7-17)20(27)16-26(15-18-9-10-18)33(30,31)23-8-5-13-32-23/h2-8,13,18-20,27H,9-12,14-16H2,1H3,(H,24,28)(H,25,29)/t19-,20+/m0/s1