InChI=1/C19H16N2O5/c22-16-8-11(17-4-2-6-26-17)7-15-13(16)9-14(19(24)21-15)18(23)20-10-12-3-1-5-25-12/h1-6,9,11H,7-8,10H2,(H,20,23)(H,21,24)/t11-/m0/s1/f/h20-21H C0403B170B2E6E51