InChI=1S/C18H26O9S/c19-11-15-8-4-7-14(27-28(23,24)25)6-3-1-2-5-12-9-13(20)10-16(21)17(12)18(22)26-15/h9-10,14-15,19-21H,1-8,11H2,(H,23,24,25)