InChI=1/C20H16N2O4/c23-19(21-15-6-7-17-18(12-15)26-10-9-25-17)8-5-14-11-13-3-1-2-4-16(13)22-20(14)24/h1-8,11-12H,9-10H2,(H,21,23)(H,22,24)/b8-5+/f/h21-22H	71A84CDA2E378E2F