InChI=1S/C19H20N2O11/c22-12-13(23)15(18(29)30)32-19(14(12)24)31-5-1-2-6-7-4-9(16(25)26)21-11(17(27)28)10(7)20-8(6)3-5/h1-3,9,11-15,19-24H,4H2,(H,25,26)(H,27,28)(H,29,30)