InChI=1S/C21H35N3O9S/c1-3-4-5-13(25)6-7-14(10-19(29)33-2)34-12-16(20(30)23-11-18(27)28)24-17(26)9-8-15(22)21(31)32/h6-7,13-16,25H,3-5,8-12,22H2,1-2H3,(H,23,30)(H,24,26)(H,27,28)(H,31,32)/b7-6-