InChI=1/C18H18N2O2/c1-12-3-5-15(6-4-12)18-11-17(19-20(18)13(2)21)14-7-9-16(22)10-8-14/h3-10,18,22H,11H2,1-2H3/t18-/m1/s1 26160FB17E664B4C