InChI=1S/C17H14N2O6/c20-9-14(6-15(21)22)19-16(23)13-5-12(7-18-8-13)10-1-3-11(4-2-10)17(24)25/h1-5,7-9,14H,6H2,(H,19,23)(H,21,22)(H,24,25)/t14-/m0/s1