InChI=1S/C18H20O8S/c1-18-12(7-13(20)17(18)22)16-11(6-15(18)21)10-3-2-9(19)4-8(10)5-14(16)26-27(23,24)25/h2-4,11-12,14-16,19,21H,5-7H2,1H3,(H,23,24,25)/t11?,12?,14?,15?,16?,18-/m1/s1