InChI=1S/C17H25NO9S2/c19-10-12-14(20)15(21)16(22)17(26-12)28-13(18-27-29(23,24)25)9-5-4-8-11-6-2-1-3-7-11/h1-3,6-7,12,14-17,19-22H,4-5,8-10H2,(H,23,24,25)/b18-13+