InChI=1S/C18H26O9S/c1-11-5-4-7-13(27-28(23,24)25)6-2-3-8-15(20)14-9-12(19)10-16(21)17(14)18(22)26-11/h9-11,13,15,19-21H,2-8H2,1H3,(H,23,24,25)