InChI=1S/C18H16O8S2/c19-12(25-18-15(22)13(20)14(21)16(26-18)17(23)24)5-1-3-9-6-7-11(28-9)10-4-2-8-27-10/h2,4,6-8,13-16,18,20-22H,5H2,(H,23,24)