InChI=1S/C18H22O8S/c19-8-18-4-3-11-10-2-1-9(20)5-13(10)15(21)6-12(11)14(18)7-16(17(18)22)26-27(23,24)25/h1-2,5,11-12,14,16-17,19-20,22H,3-4,6-8H2,(H,23,24,25)/t11?,12?,14?,16?,17?,18-/m1/s1