InChI=1/C19H22N2O3/c1-20(2)19(23)21-11-14-10-16(24-3)7-8-17(14)18(12-21)13-5-4-6-15(22)9-13/h4-10,18,22H,11-12H2,1-3H3/t18-/m0/s1 281A6DF29446C8B2