InChI=1/C20H28N2O2/c1-19(2,3)17-11-21-18(24-17)13-22-12-16(23-14-20(22,4)5)15-9-7-6-8-10-15/h6-11,16H,12-14H2,1-5H3/t16-/m0/s1 A5FB44624A5DDEE2