InChI=1S/C19H18O9S/c20-14-3-1-10(5-16(14)28-29(21,22)23)18-12-7-25-19(13(12)8-24-18)11-2-4-15-17(6-11)27-9-26-15/h1-6,12-13,18-20H,7-9H2,(H,21,22,23)