InChI=1S/C10H12N2O11/c13-1-2(14)5(9(20)21)23-7(3(1)15)12-10(22)11-6(17)4(16)8(18)19/h1-3,5,7,13-15H,(H,18,19)(H,20,21)(H2,11,12,17,22)