InChI=1/C16H15N3O2/c20-15-14-4-3-9-19(14)13-6-5-11(10-12(13)17-15)16(21)18-7-1-2-8-18/h3-6,9-10H,1-2,7-8H2,(H,17,20)/f/h17H 8D64226926F1DE00