InChI=1/C18H22N2O2/c1-3-15-13-20(10-5-11-21)17(4-2)18(15)22-16-8-6-14(12-19)7-9-16/h6-9,13,21H,3-5,10-11H2,1-2H3 073E7BF35DF735BC