InChI=1/C18H16N2O5/c21-17(25-14-7-8-15-16(9-14)24-10-23-15)11-1-3-12(4-2-11)19-18(22)20-13-5-6-13/h1-4,7-9,13H,5-6,10H2,(H2,19,20,22)/f/h19-20H 43B136245510079B