InChI=1S/C17H13N3O3/c18-9-10-5-6-13(12-4-2-1-3-11(10)12)20-16(22)15-14(21)7-8-19(15)17(20)23/h1-6,14-15,21H,7-8H2/t14-,15+/m1/s1