InChI=1S/C18H22O8S/c1-18-12(7-14(20)17(18)22)16-11(6-15(18)21)10-3-2-9(26-27(23,24)25)4-8(10)5-13(16)19/h2-4,11-16,19-21H,5-7H2,1H3,(H,23,24,25)/t11?,12?,13?,14?,15?,16?,18-/m1/s1