InChI=1S/C21H35N3O8S/c1-3-4-5-6-7-8-14(11-19(28)32-2)33-13-16(20(29)23-12-18(26)27)24-17(25)10-9-15(22)21(30)31/h7-8,14-16H,3-6,9-13,22H2,1-2H3,(H,23,29)(H,24,25)(H,26,27)(H,30,31)/b8-7-