InChI=1S/C26H29NO6S/c1-4-23(19-8-6-5-7-9-19)26(20-10-13-22(14-11-20)32-17-16-27(2)3)21-12-15-24(28)25(18-21)33-34(29,30)31/h5-15,18,28H,4,16-17H2,1-3H3,(H,29,30,31)/b26-23+