InChI=1S/C21H29N3O8S/c1-12(25)21(2,18(29)13-6-4-3-5-7-13)33-11-15(19(30)23-10-17(27)28)24-16(26)9-8-14(22)20(31)32/h3-7,14-15,18,29H,8-11,22H2,1-2H3,(H,23,30)(H,24,26)(H,27,28)(H,31,32)