InChI=1S/C20H33N3O9S/c1-2-3-4-5-6-7-14(24)17(20(31)32)33-11-13(18(28)22-10-16(26)27)23-15(25)9-8-12(21)19(29)30/h6-7,12-14,17,24H,2-5,8-11,21H2,1H3,(H,22,28)(H,23,25)(H,26,27)(H,29,30)(H,31,32)/b7-6-