InChI=1/C19H16N2O6/c22-18-13-27-17-9-8-15(21(24)25)11-16(17)20(18)12-19(23)26-10-4-7-14-5-2-1-3-6-14/h1-9,11H,10,12-13H2/b7-4+ 32FF5256CA7D0791