InChI=1/C15H20N2O2/c1-12-14(13-8-4-2-5-9-13)17(19)15(16(12)18)10-6-3-7-11-15/h2,4-5,8-9,12,18H,3,6-7,10-11H2,1H3/t12-/m0/s1 681C224E0CAC38F6