InChI=1S/C21H27N2O9/c1-8-15-12(7-14(25)23(8,3)9(2)24)11-5-4-10(6-13(11)22-15)31-21-18(28)16(26)17(27)19(32-21)20(29)30/h4-6,8,14,16-19,21-22,25-28H,7H2,1-3H3,(H,29,30)