InChI=1/C17H16N2O4/c20-16(12-5-2-1-3-6-12)18-19-17(21)13-7-8-14-15(11-13)23-10-4-9-22-14/h1-3,5-8,11H,4,9-10H2,(H,18,20)(H,19,21)/f/h18-19H E20D61B3B9542AFE