InChI=1/C16H18N2O2/c1-11-3-8-15(19-11)16(12(2)18)20-14-6-4-13(5-7-14)9-10-17/h3-8,12,16H,9,18H2,1-2H3/p+1/t12-,16-/m1/s1/fC16H19N2O2/h18H/q+1 CF0AA164DE38A683