InChI=1/C15H13N3O4/c1-18(2)7-3-4-9-11(5-7)22-14-12(17-9)8(15(16)21)6-10(19)13(14)20/h3-6H,1-2H3,(H3-,16,17,19,20,21)/p+1/fC15H14N3O4/h19-20H,16H2/q+1 14DB2E1D1CAC9CCF