InChI=1S/C18H22O8S/c1-17-5-4-11-10-3-2-9(26-27(23,24)25)6-13(10)15(19)7-12(11)14(17)8-16(20)18(17,21)22/h2-3,6,11-12,14,16,20-22H,4-5,7-8H2,1H3,(H,23,24,25)/t11?,12?,14?,16?,17-/m0/s1