InChI=1/C24H18N2O6/c1-14-6-5-7-16(10-14)25-23(28)18-9-4-3-8-17(18)19(24(25)29)11-15-12-20(26(30)31)22(27)21(13-15)32-2/h3-13,27H,1-2H3/b19-11- AB38B8382F88EE7F