InChI=1S/C21H19N5O4/c1-2-4-16(28)23-10-3-5-15(27)20-25-17(18-19(22)24-11-12-26(18)20)13-6-8-14(9-7-13)21(29)30/h6-9,11-12H,3,5,10H2,1H3,(H2,22,24)(H,23,28)(H,29,30)