InChI=1/C19H21N3O4/c1-13(14-4-3-5-17(23)12-14)21(2)18(24)20-15-6-8-16(9-7-15)22-10-11-26-19(22)25/h3-9,12-13,23H,10-11H2,1-2H3,(H,20,24)/t13-/m1/s1/f/h20H 8124684300E904BD