InChI=1S/C21H25N2O8/c1-9-15-13(6-7-23(9,3)10(2)24)12-5-4-11(8-14(12)22-15)30-21-18(27)16(25)17(26)19(31-21)20(28)29/h4-5,8,16-19,21-22,25-27H,1,6-7H2,2-3H3,(H,28,29)