InChI=1S/C13H14N2O8/c16-10(17)5-7(11(18)19)14-2-1-6-3-8(12(20)21)15-9(4-6)13(22)23/h1-3,7,9,15H,4-5H2,(H,16,17)(H,18,19)(H,20,21)(H,22,23)/b6-1-,14-2?/t7-,9-/m0/s1