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