InChI=1/C18H18N2O3/c1-2-9-20-17(12-7-8-15-16(10-12)23-11-22-15)19-14-6-4-3-5-13(14)18(20)21/h3-8,10,17,19H,2,9,11H2,1H3/t17-/m1/s1 35AAA624D4F06905