InChI=1S/C25H30O9S/c1-15(2)4-7-18-10-17(6-9-21(18)27)11-24(34-35(31,32)33)25(30)20-12-19(8-5-16(3)14-26)22(28)13-23(20)29/h4-6,9-10,12-13,24,26-29H,7-8,11,14H2,1-3H3,(H,31,32,33)/b16-5+