InChI=1/C20H16N2O4/c1-2-20(18-4-3-7-24-18)16-9-13(14-8-15(10-21)25-11-14)5-6-17(16)22-19(23)12-26-20/h3-9,11H,2,12H2,1H3,(H,22,23)/t20-/m0/s1/f/h22H 6013D6E58DEE604A