InChI=1/C19H16N2O6/c1-19(9-12-4-2-3-5-13(12)17(23)27-19)18(24)21-20-16(22)11-6-7-14-15(8-11)26-10-25-14/h2-8H,9-10H2,1H3,(H,20,22)(H,21,24)/t19-/m1/s1/f/h20-21H	496F7813EE86F863