InChI=1S/C21H35N3O9S/c1-13(25)16(7-5-3-4-6-8-19(29)33-2)34-12-15(20(30)23-11-18(27)28)24-17(26)10-9-14(22)21(31)32/h3-4,13-16,25H,5-12,22H2,1-2H3,(H,23,30)(H,24,26)(H,27,28)(H,31,32)/b4-3-