InChI=1S/C21H29NO12/c1-8(11-7-22-13(18(28)29)10(11)6-12(23)24)4-3-5-9(2)20(32)34-21-16(27)14(25)15(26)17(33-21)19(30)31/h3-5,9-11,13-17,21-22,25-27H,6-7H2,1-2H3,(H,23,24)(H,28,29)(H,30,31)/b5-3-,8-4+