InChI=1S/C20H33N3O9S/c1-12(15(24)6-4-2-3-5-7-17(26)27)33-11-14(19(30)22-10-18(28)29)23-16(25)9-8-13(21)20(31)32/h2-3,12-15,24H,4-11,21H2,1H3,(H,22,30)(H,23,25)(H,26,27)(H,28,29)(H,31,32)/b3-2-