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