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