InChI=1/C17H16N2O4/c1-18-16(20)11-3-2-4-13(9-11)19-17(21)12-5-6-14-15(10-12)23-8-7-22-14/h2-6,9-10H,7-8H2,1H3,(H,18,20)(H,19,21)/f/h18-19H 64CC6F2608C4589F