InChI=1S/C22H14N2O5/c1-11-5-2-8-14(25)17(11)21-24-18-12(6-3-9-15(18)29-21)20-23-19-13(22(26)27)7-4-10-16(19)28-20/h2-10,25H,1H3,(H,26,27)