InChI=1S/C21H35N3O8S/c1-2-3-4-5-6-7-8-16(26)17(12-25)33-13-15(20(30)23-11-19(28)29)24-18(27)10-9-14(22)21(31)32/h6-7,12,14-17,26H,2-5,8-11,13,22H2,1H3,(H,23,30)(H,24,27)(H,28,29)(H,31,32)/b7-6-