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