InChI=1/C19H21N3O4/c1-12(21-15-7-4-8-16-17(15)26-10-9-25-16)18(23)22-14-6-3-5-13(11-14)19(24)20-2/h3-8,11-12,21H,9-10H2,1-2H3,(H,20,24)(H,22,23)/t12-/m1/s1/f/h20,22H B097ABEB224F163C