InChI=1S/C19H16O8S/c20-13(11-26-28(23,24)25)10-15(12-6-2-1-3-7-12)17-18(21)14-8-4-5-9-16(14)27-19(17)22/h1-9,15,21H,10-11H2,(H,23,24,25)