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