InChI=1S/C19H16O8S/c1-10-2-4-13-16(25-9-10)5-3-11-8-17(26-18(11)13)12-6-14(20)19(15(21)7-12)27-28(22,23)24/h2-3,5-8,20-21H,4,9H2,1H3,(H,22,23,24)