InChI=1/C14H13N3O3/c1-9(18)16-10-4-2-5-11(8-10)17-14(20)12-6-3-7-15-13(12)19/h2-8H,1H3,(H,15,19)(H,16,18)(H,17,20)/f/h15-17H 9B19B0066F331BF0