InChI=1S/C18H22O8S/c1-18-3-2-9-10-6-13(20)12(19)4-8(10)5-14(21)16(9)11(18)7-15(22)17(18)26-27(23,24)25/h4,6,9,11,14,16-17,19-21H,2-3,5,7H2,1H3,(H,23,24,25)/t9?,11?,14?,16?,17?,18-/m0/s1