InChI=1S/C23H16N2O5/c26-13-6-7-16-15(10-13)19-17(25(16)9-8-18(27)28)11-14(12-4-2-1-3-5-12)20-21(19)23(30)24-22(20)29/h1-7,10-11,26H,8-9H2,(H,27,28)(H,24,29,30)