InChI=1/C18H18N2O3/c1-11-4-5-13(8-12(11)2)18(22)19-14-6-7-16-15(9-14)20(3)17(21)10-23-16/h4-9H,10H2,1-3H3,(H,19,22)/f/h19H CE4225C6EE0A0BB3