InChI=1/C18H26N2O2/c1-5-7-12-20(4)18(21)22-17-10-8-9-16(14-17)13-15(3)19-11-6-2/h2,8-10,14-15,19H,5,7,11-13H2,1,3-4H3/t15-/m1/s1 C5F802B6A431913D