InChI=1/C19H19N3O4/c23-17-13(11-12-5-1-2-6-14(12)20-17)18(24)21-15-7-3-4-8-16(15)22-9-10-26-19(22)25/h3-4,7-8,11H,1-2,5-6,9-10H2,(H,20,23)(H,21,24)/f/h20-21H 8A1DB35697B1CB52