InChI=1S/C22H16N4O4/c1-24-10-15(13-5-3-4-6-17(13)24)19-20(22(28)23-21(19)27)16-11-25(2)18-9-12(26(29)30)7-8-14(16)18/h3-11H,1-2H3,(H,23,27,28)