InChI=1S/C22H26O9S/c1-28-18-9-8-13-10-15(18)16-12-14(20(24)22(30-3)21(16)29-2)6-4-5-7-17(23)19(11-13)31-32(25,26)27/h8-10,12,19,24H,4-7,11H2,1-3H3,(H,25,26,27)