InChI=1S/C20H25N3O9S2/c1-9-2-3-10(34-9)6-13-17(16(27)20(31)32-13)33-8-12(18(28)22-7-15(25)26)23-14(24)5-4-11(21)19(29)30/h2-3,6,11-12,16-17,27H,4-5,7-8,21H2,1H3,(H,22,28)(H,23,24)(H,25,26)(H,29,30)/b13-6+