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