InChI=1S/C18H20O8S/c1-18-3-2-10-15-8(4-9(19)6-12(15)20)5-14(26-27(23,24)25)16(10)11(18)7-13(21)17(18)22/h4,6,10-11,14,16,19-20H,2-3,5,7H2,1H3,(H,23,24,25)/t10?,11?,14?,16?,18-/m0/s1