InChI=1S/C19H18O9S/c1-24-19-17(20)12(3-2-6-27-29(21,22)23)7-13-9-15(28-18(13)19)11-4-5-14-16(8-11)26-10-25-14/h4-5,7-9,20H,2-3,6,10H2,1H3,(H,21,22,23)