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