InChI=1S/C19H22O9S/c1-19(21)13-8-11(6-7-20)9-16(26-3)17(13)27-18(19)12-4-5-14(15(10-12)25-2)28-29(22,23)24/h4-5,8-10,18,20-21H,6-7H2,1-3H3,(H,22,23,24)