InChI=1/C18H21N3O3/c1-2-12-7-9-18(10-8-12)16(22)21(17(23)20-18)11-15-19-13-5-3-4-6-14(13)24-15/h3-6,12H,2,7-11H2,1H3,(H,20,23)/f/h20H BBF3B8A75EA48DA5