InChI=1S/C12H16N2O10/c15-1-3-4(13-12(22)14-9(3)19)2-23-11-7(18)5(16)6(17)8(24-11)10(20)21/h5-8,11,15-18H,1-2H2,(H,20,21)(H2,13,14,19,22)