InChI=1S/C26H29NO6S/c1-4-22(19-9-6-5-7-10-19)25(20-13-15-21(16-14-20)32-18-17-27(2)3)23-11-8-12-24(26(23)28)33-34(29,30)31/h5-16,28H,4,17-18H2,1-3H3,(H,29,30,31)/b25-22+