InChI=1S/C18H20O8S/c19-8-18-4-3-12-11-2-1-10(20)5-9(11)6-15(26-27(23,24)25)16(12)13(18)7-14(21)17(18)22/h1-2,5,12-13,15-16,19-20H,3-4,6-8H2,(H,23,24,25)/t12?,13?,15?,16?,18-/m1/s1