InChI=1S/C18H18O8S2/c19-13-14(20)16(17(22)23)26-18(15(13)21)25-8-2-1-4-10-6-7-12(28(10)24)11-5-3-9-27-11/h3,5-7,9,13-16,18-21H,2,8H2,(H,22,23)