InChI=1S/C18H20O8S/c1-18-7-14(21)15-10-3-2-9(26-27(23,24)25)4-8(10)5-12(19)16(15)11(18)6-13(20)17(18)22/h2-4,11-12,14-16,19,21H,5-7H2,1H3,(H,23,24,25)/t11?,12?,14?,15?,16?,18-/m0/s1