InChI=1/C16H15N3O/c1-10-3-6-14(11(2)7-10)16(20)18-13-5-4-12-9-17-19-15(12)8-13/h3-9H,1-2H3,(H,17,19)(H,18,20)/f/h18-19H 8BA494437671EBD9