InChI=1S/C20H35N3O8S/c1-12(8-9-24)4-6-15(20(2,3)31)32-11-14(18(28)22-10-17(26)27)23-16(25)7-5-13(21)19(29)30/h8,13-15,24,31H,4-7,9-11,21H2,1-3H3,(H,22,28)(H,23,25)(H,26,27)(H,29,30)/b12-8-