InChI=1/C20H28N2O/c1-4-5-10-20-13-21-11-19(3,18(20)23)12-22(14-20)17(21)16-9-7-6-8-15(16)2/h6-9,17H,4-5,10-14H2,1-3H3/p+1/t17-,19+,20-/fC20H29N2O/h21H/q+1/m1/s1 851336B89660425A