InChI=1/C16H14N2O4/c19-15(13-10-21-16(20)18-13)17-12-8-4-5-9-14(12)22-11-6-2-1-3-7-11/h1-9,13H,10H2,(H,17,19)(H,18,20)/t13-/m1/s1/f/h17-18H 866547C0015AD862