InChI=1/C15H16N2O6/c1-17-14(19)9(13(18)16-15(17)20)7-8-5-6-10(21-2)12(23-4)11(8)22-3/h5-7H,1-4H3,(H,16,18,20)/p-1/b9-7+/fC15H15N2O6/q-1 033C82BB6501A5C4