InChI=1S/C20H31N3O8S/c1-2-15-16(31-15)5-3-4-12(8-9-24)32-11-14(19(28)22-10-18(26)27)23-17(25)7-6-13(21)20(29)30/h3-4,9,12-16H,2,5-8,10-11,21H2,1H3,(H,22,28)(H,23,25)(H,26,27)(H,29,30)/b4-3-