InChI=1S/C17H19NO9S2/c18-3-4-28-17-14-11(21)6-9(19)7-13(14)26-16(15(17)22)8-1-2-10(20)12(5-8)27-29(23,24)25/h1-2,5-7,15-17,19-22H,3-4,18H2,(H,23,24,25)