InChI=1/C16H16N2O2/c1-2-11-9-12(16(19)17-10-11)7-8-15-18-13-5-3-4-6-14(13)20-15/h3-6,9-10H,2,7-8H2,1H3,(H,17,19)/f/h17H AC4BE4017B25B650